Fix links and version references (branch 16) (#773)

* Fix broken link references (404s) found during `mkdocs serve` (branch 16)

* Change version 15 references in links to `{{pgversion}}`
while leaving hardcoded version 16 references unchanged.

Author: philip

docs/contrib.md

@@ -33,7 +33,7 @@ Find the list of controb modules and extensions included in Percona Distribution
 |[pg_freespacemap](https://www.postgresql.org/docs/{{pgversion}}/pgfreespacemap.html) |Required |Provides a means of examining the free space map (FSM), which PostgreSQL uses to track the locations of available space in tables and indexes. This can be useful for understanding space utilization and planning for maintenance operations. |
 |[pg_prewarm](https://www.postgresql.org/docs/{{pgversion}}/pgprewarm.html) | | Provides a convenient way to load relation data into either the operating system buffer cache or the PostgreSQL buffer cache. This can be useful for reducing the time needed for a newly started database to reach its full performance potential by preloading frequently accessed data.|
 |[pgrowlocks](https://www.postgresql.org/docs/{{pgversion}}/pgrowlocks.html) | Required |Provides a function to show row locking information for a specified table. |
-|[pg_stat_statements](https://www.postgresql.org/docs/{{pgversion}}/pgstatstatements.html) | Required |A module for tracking planning and execution statistics of all SQL statements executed by a server. Consider using an advanced version of `pg_stat_statements` - [`pg_stat_monitor`](pg-stat-monitor.md) |
+|[pg_stat_statements](https://www.postgresql.org/docs/{{pgversion}}/pgstatstatements.html) | Required |A module for tracking planning and execution statistics of all SQL statements executed by a server. Consider using an advanced version of `pg_stat_statements` - [pg_stat_monitor :octicons-link-external-16:](https://github.com/percona/pg_stat_monitor) |
 |[pgstattuple](https://www.postgresql.org/docs/{{pgversion}}/pgstattuple.html) | Required |Povides various functions to obtain tuple-level statistics. It offers detailed information about tables and indexes, such as the amount of free space and the number of live and dead tuples. |
 |[pg_surgery](https://www.postgresql.org/docs/{{pgversion}}/pgsurgery.html) | Required | Provides various functions to perform surgery on a damaged relation. These functions are unsafe by design and using them may corrupt (or further corrupt) your database. Use them with caution and only as a last resort|
 |[pg_trgm](https://www.postgresql.org/docs/{{pgversion}}/pgtrgm.html) | |Provides functions and operators for determining the similarity of alphanumeric text based on trigram matching. A trigram is a contiguous sequence of three characters. The extension can be used for text search and pattern matching operations. |

docs/enable-extensions.md

@@ -60,7 +60,7 @@ For details about each option, see [pdBadger documentation :octicons-link-extern
 
 ## pgaudit
 
-Add the `pgaudit` to `shared_preload_libraries` in `postgresql.conf`. The recommended way is to use the [ALTER SYSTEM](https://www.postgresql.org/docs/16/sql-altersystem.html) command. [Connect to psql](#connect-to-the-postgresql-server) and use the following command:
+Add the `pgaudit` to `shared_preload_libraries` in `postgresql.conf`. The recommended way is to use the [ALTER SYSTEM](https://www.postgresql.org/docs/16/sql-altersystem.html) command. [Connect to psql](connect.md) and use the following command:
 
 ```sql
 ALTER SYSTEM SET shared_preload_libraries = 'pgaudit';

docs/ldap.md

@@ -2,6 +2,6 @@
 
 When a client application or a user that runs the client application connects to the database, it must identify themselves. The process of validating the client's identity and determining whether this client is permitted to access the database it has requested is called **authentication**. 
 
-Percona Distribution for PortgreSQL supports several [authentication methods :octicons-link-external-16:](https://www.postgresql.org/docs/15/auth-methods.html), including the [LDAP authentication :octicons-link-external-16:](https://www.postgresql.org/docs/14/auth-ldap.html). The use of LDAP is to provide a central place for authentication - meaning the LDAP server stores usernames and passwords and their resource permissions. 
+Percona Distribution for PortgreSQL supports several [authentication methods :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/auth-methods.html), including the [LDAP authentication :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/auth-ldap.html). The use of LDAP is to provide a central place for authentication - meaning the LDAP server stores usernames and passwords and their resource permissions.
 
 The LDAP authentication in Percona Distribution for PortgreSQL is implemented the same way as in upstream PostgreSQL.

docs/release-notes-v16.8.md

@@ -18,7 +18,7 @@ This release fixes [CVE-2025-1094](https://www.postgresql.org/support/security/C
 
 ### PostGIS is included into tarballs
 
-We have extended Percona Distribution for PostgreSQL tarballs with PostGIS - an open-source extension to handle spacial data. This way you can install and run PostgreSQL as a geospatial database on hosts without a direct access to the Internet. Learn more about [installing from tarballs](tarball.md) and [Spacial data manipulation](postgis.md) 
+We have extended Percona Distribution for PostgreSQL tarballs with PostGIS - an open-source extension to handle spacial data. This way you can install and run PostgreSQL as a geospatial database on hosts without a direct access to the Internet. Learn more about [installing from tarballs](tarball.md) and [Spacial data manipulation](solutions/postgis.md)
 
 ### Deprecation of meta packages
 

docs/solutions/backup-recovery.md

@@ -21,9 +21,9 @@ A Disaster Recovery (DR) solution ensures that a system can be quickly restored
     <br>
     PostgreSQL offers multiple options for setting up database disaster recovery. 
 
-    - **[pg_dump :octicons-link-external-16:](https://www.postgresql.org/docs/15/app-pgdump.html) or the [pg_dumpall :octicons-link-external-16:](https://www.postgresql.org/docs/15/app-pg-dumpall.html) utilities**
+    - **[pg_dump :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/app-pgdump.html) or the [pg_dumpall :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/app-pg-dumpall.html) utilities**
 
-    This is the basic backup approach. These tools can generate the backup of one or more PostgreSQL databases (either just the structure, or both the structure and data), then restore them through the [pg_restore :octicons-link-external-16:](https://www.postgresql.org/docs/15/app-pgrestore.html) command. 
+    This is the basic backup approach. These tools can generate the backup of one or more PostgreSQL databases (either just the structure, or both the structure and data), then restore them through the [pg_restore :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/app-pgrestore.html) command.
 
     | Advantages   | Disadvantages   |
     | ------------ | --------------- |
@@ -37,7 +37,7 @@ A Disaster Recovery (DR) solution ensures that a system can be quickly restored
     | ------------ | --------------- |
     | Consistent snapshot of the data directory or the whole data disk volume | 1. Requires stopping PostgreSQL in order to copy the files. This is not practical for most production setups.<br> 2. No backup of individual databases or tables.|
 
-    - **PostgreSQL [pg_basebackup :octicons-link-external-16:](https://www.postgresql.org/docs/15/app-pgbasebackup.html)**
+    - **PostgreSQL [pg_basebackup :octicons-link-external-16:](https://www.postgresql.org/docs/{{pgversion}}/app-pgbasebackup.html)**
 
     This backup tool is provided by PostgreSQL. It is used to back up data when the database instance is running. `pgasebackup` makes a binary copy of the database cluster files, while making sure the system is put in and out of backup mode automatically. 
 

docs/solutions/postgis-deploy.md

@@ -68,7 +68,7 @@ The following document provides guidelines how to install PostGIS and how to run
 
 === ":octicons-download-16: From tarballs"
 
-    PostGIS is included into binary tarball and is a part of the `percona-postgresql{{pgversion}}` binary. Use the [install from tarballs](../tarball/.md) tutorial to install it. 
+    PostGIS is included into binary tarball and is a part of the `percona-postgresql{{pgversion}}` binary. Use the [install from tarballs](../tarball.md) tutorial to install it.
 
 
 ## Enable PostGIS extension