Build the docs in parallel in the pip environment (#1556)

Author: maximlt

.github/workflows/docs.yaml

@@ -103,7 +103,7 @@ jobs:
           echo "Deploying from ref ${GITHUB_REF#refs/*/}"
           echo "tag=${GITHUB_REF#refs/*/}" >> $GITHUB_OUTPUT
       - name: build docs
-        run: sphinx-build -b html doc builtdocs
+        run: sphinx-build -j auto -b html doc builtdocs
       - name: report failure
         if: failure()
         run: cat /tmp/sphinx-*.log | tail -n 100

doc/conf.py

@@ -133,7 +133,7 @@
     # Customizations user guide moved to the reference
     'user_guide/Customization': 'ref/plotting_options/index',
     # Pandas API viz user guide moved to the reference
-    'user_guide/pandas_api': 'ref/api_compatibility/pandas/pandas_api',
+    'user_guide/pandas_api': 'ref/api_compatibility/pandas/Pandas_API',
 }
 
 html_extra_path = ['topics.html']