Cleanup (#24)

This pull request introduces minor documentation improvements and
cleanup. The most notable changes are:

Documentation improvements:

* Added a new `.EXAMPLE` section to the comment-based help in
`Get-CurrentDateTime.ps1`, demonstrating how to use the `-Format` and
`-CustomFormat` parameters for custom date formatting.

Configuration cleanup:

* Removed the `.github/release.yml` file, which contained configuration
for automatically generated release notes.

Author: MariusStorhaug

.github/release.yml

@@ -17,6 +17,11 @@
 
         Returns the current date in short date format.
 
+        .EXAMPLE
+        Get-CurrentDateTime -Format 'Custom' -CustomFormat 'dddd, MMMM dd, yyyy'
+
+        Returns the current date in a custom format like "Monday, January 20, 2026".
+
         .LINK
         https://MariusStorhaug.github.io/MariusTestModule/Functions/Get-CurrentDateTime/
     #>