[Update]: update README.md and update-version.sh

Author: yutaro-sakamoto

README.md

@@ -142,6 +142,10 @@ Run.
 java [PROGRAM-ID]
 ```
 
+## API reference of the runtime library
+
+The API reference of the runtime library `libcobj.jar` is available [here](https://opensourcecobol.github.io/opensourcecobol4j/javadoc/libcobj/index.html)
+
 ## Development Progress
 
 Implemented.

update-version.sh

@@ -23,6 +23,7 @@ update_versions_in_file libcobj/app/build.gradle.kts
 update_versions_in_file libcobj/app/src/main/java/jp/osscons/opensourcecobol/libcobj/Const.java
 update_versions_in_file tests/command-line-options.src/info-java-dir.at
 update_versions_in_file libcobj/app/src/main/java/jp/osscons/opensourcecobol/libcobj/user_util/cobj_api/ApiFilesOptions.java
+update_versions_in_file win/config.h
 
 # Rebuild
 autoreconf