Backport PR #57582 on branch 2.2.x (DOC: Add contributors for 2.2.1) (#57583)

Backport PR #57582: DOC: Add contributors for 2.2.1

Co-authored-by: Thomas Li <[email protected]>

Author: meeseeksmachine

doc/source/whatsnew/v2.2.0.rst

@@ -946,4 +946,4 @@ Other
 Contributors
 ~~~~~~~~~~~~
 
-.. contributors:: v2.1.4..v2.2.0|HEAD
+.. contributors:: v2.1.4..v2.2.0

doc/source/whatsnew/v2.2.1.rst

@@ -86,3 +86,5 @@ Other
 
 Contributors
 ~~~~~~~~~~~~
+
+.. contributors:: v2.2.0..v2.2.1|HEAD