update workflow

.gitea/workflows/deploy.yaml

@@ -25,7 +25,7 @@ jobs:
       # Step 3: Build the static site
       - name: Build site with MkDocs
         run: |
-          if [ -f "mkdocs.yml" ]; then
+          if [ -f "mkdocs.yaml" ]; then
             mkdocs build
           else
             echo "mkdocs.yml not found!"