Merge pull request matplotlib#26766 from meeseeksmachine/auto-backport-of-pr-26763-on-v3.8.x

Backport PR matplotlib#26763 on branch v3.8.x (DOC: Add redirects for old gitwash files)

Author: ksunden

doc/devel/development_workflow.rst

@@ -1,5 +1,8 @@
 .. highlight:: bash
 
+.. redirect-from:: /devel/gitwash/development_workflow
+.. redirect-from:: /devel/gitwash/maintainer_workflow
+
 .. _development-workflow:
 
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