Make correction to URL, from https://about.gitab.com/handbook/documentation/...

Make correction to URL, from https://about.gitab.com/handbook/documentation/ to https://about.gitlab.com/handbook/documentation/ (I searched to see if this is a duplicate of an existing fix, didn't find one)

doc/development/documentation/index.md

@@ -4,7 +4,7 @@ description: Learn how to contribute to GitLab Documentation.
 
 # GitLab Documentation guidelines
 
-GitLab's documentation is [intended as the single source of truth (SSOT)](https://about.gitab.com/handbook/documentation/) for information about how to configure, use, and troubleshoot GitLab. The documentation contains use cases and usage instructions covering every GitLab feature, organized by product area and subject. This includes topics and workflows that span multiple GitLab features, as well as the use of GitLab with other applications.
+GitLab's documentation is [intended as the single source of truth (SSOT)](https://about.gitlab.com/handbook/documentation/) for information about how to configure, use, and troubleshoot GitLab. The documentation contains use cases and usage instructions covering every GitLab feature, organized by product area and subject. This includes topics and workflows that span multiple GitLab features, as well as the use of GitLab with other applications.
 
 In addition to this page, the following resources to help craft and contribute documentation are available: