ci: Fix docs workflow (#923)

Author: mtrezza

.github/workflows/release-manual-docs.yml

@@ -34,5 +34,5 @@ jobs:
         uses: peaceiris/actions-gh-pages@v3.7.3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./.api_docs/
-
+          publish_dir: ./.api_docs/${{ env.package }}/
+          destination_dir: ${{ env.package }}