[ci] Fix working directory

.github/workflows/github-pages.yml

@@ -1,4 +1,4 @@
-name: Deploy static content to Pages
+name: Deploy Github Pages
 
 on:
   push:
@@ -29,7 +29,7 @@ jobs:
       - name: Install Material for MkDocs
         run: pip install mkdocs-material
       - name: Build Website
-        working-directory: docs/
+        working-directory: doc/
         run: mkdocs build
       - name: Setup Pages
         uses: actions/configure-pages@v5