Merge pull request #4734 from tigran-sargsyan-w/unity-patch

Add header note in Unity.gitignore about using Global editor/OS templates

Unity.gitignore

@@ -2,6 +2,9 @@
 #
 # Get latest from https://github.com/github/gitignore/blob/main/Unity.gitignore
 #
+# Recommended: add any editor/OS/tool-specific ignore rules from the Global/ templates as needed.
+# See: https://github.com/github/gitignore/tree/main/Global
+#
 .utmp/
 /[Ll]ibrary/
 /[Tt]emp/