Update docs.yml

The documentation should be regenerated whenever the release_v1.0.0 branch is updated.

.github/workflows/docs.yml

@@ -4,7 +4,7 @@ name: website
 on:
   push:
     branches:
-      - main
+      - release_v1.0.0
     # Alternative: only build for tags.
     # tags:
     #   - '*'