Tweak trigger.

.github/workflows/sphinx.yml

@@ -1,6 +1,10 @@
 name: "Sphinx: Render docs"
 
-on: push
+on:
+  push:
+    branches:
+      - feature/retrieve_doc  # Build from main branch
+  workflow_dispatch:  # Manual trigger
 
 jobs:
   build:
@@ -22,12 +26,6 @@ jobs:
     - name: Build Sphinx documentation with multiversion
         run: |
           sphinx-multiversion docs/ _build/html
-
-    - name: Upload artifacts
-      uses: actions/upload-artifact@v4
-      with:
-        name: html-docs
-        path: docs/build/html/
         
     - name: Deploy to GitHub Pages
       uses: peaceiris/actions-gh-pages@v3