fix faulty json in nextcloud-config.yaml

templates/nextcloud-config.yaml

@@ -22,7 +22,7 @@ data:
           "sameTab": "false",
           "settings_error": "",
           "types": "filesystem",
-          "customizationForcesave": "true",
+          "customizationForcesave": "true"
         }
       }
     }