update docs

docs/20_Checks/check_gitlab_tokens.md

@@ -52,6 +52,10 @@ GITLAB_TOKEN='glpat-1234567890'
 # REST_CLIENT='/some/where/rest-api-client.sh'
 ```
 
+Hint:
+
+If you need to skip the token check but the check was rolled out on a server then you can set `GITLAB_TOKEN=SKIP`. You can leave the other variables empty.
+
 ## Syntax
 
 ```txt
@@ -110,7 +114,7 @@ EXAMPLES:
 
 ```
 
-## Example
+## Output
 
 The execution of  `check_gitlab_tokens` returns