Adds git events to the list of import/export exclusion

What does this MR do and why?

We have an open issue about not including git events to import/export: #214700.

This MR adds a note about it to the docs.

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doc/user/project/settings/import_export.md

@@ -131,7 +131,7 @@ Items that are **not** exported include:
 - Repository size limits
 - Deploy keys allowed to push to protected branches
 - Secure Files
-- [Activities related to git events: pushing, creating tags, etc](https://gitlab.com/gitlab-org/gitlab/-/issues/214700)
+- [Activity logs for Git-related events](https://gitlab.com/gitlab-org/gitlab/-/issues/214700). For example, pushing and creating tags
 
 ## Import a project and its data