fix install shell

Author: ityuany

.github/workflows/debug-install-shell.yml

@@ -46,7 +46,7 @@ jobs:
       - name: Test install with install-dir
         run: |
           chmod +x install.sh
-          ./install.sh --install-dir "/.snm-demo"
+          ./install.sh --install-dir /.snm-demo
           if [ ! -d /.snm-demo ]; then
             echo "Error: /.snm-demo directory not found!"
             exit 1