fix tolgee update check

ct/tolgee.sh

@@ -25,7 +25,7 @@ function update_script() {
   check_container_storage
   check_container_resources
 
-  if [[ ! -f /opt/tolgee/tolgee.jar ]]; then
+  if [[ ! -d /opt/tolgee ]]; then
     msg_error "No ${APP} Installation Found!"
     exit
   fi