Clean Gitlab Comment Reporter doc (#2424)

* Resolves #2423

* Update CHANGELOG.md

---------

Co-authored-by: Nicolas Vuillamy <nicolas.vuillamy@gmail.com>

CHANGELOG.md

@@ -10,6 +10,7 @@ Note: Can be used with `oxsecurity/megalinter@beta` in your GitHub Action mega-l
 
 - Fixes
   - Fix issue with running on Mac m1 no longer working [#2427](https://github.com/oxsecurity/megalinter/issues/2427)
+  - Fix **GitlabCommentReporter** wrong variables names, check [#2423](https://github.com/oxsecurity/megalinter/issues/2423)
 
 - Linter versions upgrades
   - [jsonlint](https://github.com/prantlf/jsonlint) from 13.0.1 to **14.0.0** on 2023-03-05
@@ -23,6 +24,10 @@ Note: Can be used with `oxsecurity/megalinter@beta` in your GitHub Action mega-l
   - [jsonlint](https://github.com/prantlf/jsonlint) from 14.0.0 to **14.0.1** on 2023-03-07
   - [mypy](https://mypy.readthedocs.io/en/stable/) from 1.0.1 to **1.1.1** on 2023-03-07
   - [checkov](https://www.checkov.io/) from 2.3.66 to **2.3.67** on 2023-03-07
+  - [ansible-lint](https://ansible-lint.readthedocs.io/) from 6.14.0 to **6.14.1** on 2023-03-07
+  - [phpstan](https://phpstan.org/) from 1.10.4 to **1.10.5** on 2023-03-07
+  - [puppet-lint](http://puppet-lint.com/) from 3.2.0 to **3.3.0** on 2023-03-07
+  - [checkov](https://www.checkov.io/) from 2.3.67 to **2.3.70** on 2023-03-07
 <!-- linter-versions-end -->
 
 ## [v6.20.0] - 2023-03-05

docs/reporters/GitlabCommentReporter.md

@@ -23,8 +23,6 @@ Click on hyperlinks to access detailed logs (click on **Download** in **Artifact
 | Variable                       | Description                                                                                            | Default value            |
 |--------------------------------|--------------------------------------------------------------------------------------------------------|--------------------------|
 | GITLAB_COMMENT_REPORTER        | Activates/deactivates reporter                                                                         | true                     |
-| GITLAB_API_URL                 | URL where the github API can be reached<br/>May be overridden if using self-hosted Gitlab              | `https://api.gitlab.com` |
-| GITLAB_SERVER_URL              | URL of the Gitlab instance<br/>May be overridden if using self-hosted Gitlab                           | `https://gitlab.com`     |
 | GITLAB_ACCESS_TOKEN_MEGALINTER | Must contain a Gitlab private access token defined with api access                                     | <!-- -->                 |
 | GITLAB_CUSTOM_CERTIFICATE      | SSL certificate value to connect to Gitlab                                                             | <!-- -->                 |
 | GITLAB_CERTIFICATE_PATH        | Path to SSL certificate to connect to Gitlab (if SSL cert has been manually defined with PRE_COMMANDS) | <!-- -->                 |