ci(docs[preview]): TEMP add autodoc-improvements to publish trigger

why: Preview the gp-sphinx v0.0.1a8 docs stack on the production
  CDN before merging. Revert this single-line change before merge
  so the default branch remains the only one that publishes.
what:
- Add autodoc-improvements to the push-triggered branch list in
  .github/workflows/docs.yml with a TEMP inline comment

Author: tony

.github/workflows/docs.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - autodoc-improvements  # TEMP: preview gp-sphinx v0.0.1a8; revert before merge
 
 permissions:
   contents: read