Fix upload.yaml

Author: ralfgerlich

Diff for: .github/workflows/upload.yaml

@@ -20,5 +20,4 @@ jobs:
           local-dir: .
           server-dir: ${{ secrets.docs_target_dir }}
           security: strict
-          exclude:
-            - **/.git*/**
+          exclude: ["**/.git*", "**/.git*/**"]