Changed files section name

README.md

@@ -42,7 +42,7 @@ Inspired by [awesome-php](https://github.com/ziadoz/awesome-php).
     - [Email](#email)
     - [Enterprise Application Integrations](#enterprise-application-integrations)
     - [Environment Management](#environment-management)
-    - [Files](#files)
+    - [Files](#file)
     - [Foreign Function Interface](#foreign-function-interface)
     - [Forms](#forms)
     - [Functional Programming](#functional-programming)
@@ -614,7 +614,7 @@ Inspired by [awesome-php](https://github.com/ziadoz/awesome-php).
 * [pyenv](https://github.com/pyenv/pyenv) - Simple Python version management.
 * [virtualenv](https://github.com/pypa/virtualenv) - A tool to create isolated Python environments.
 
-## File Manipulation
+## File
 
 *Libraries for file manipulation and MIME type detection.*