Merge branch 'docs/user-private-email-commit-match' into 'master'

Doc: non-public email is used for commit match

See merge request !135967



Merged-by: Jon Glassman <jglassman@gitlab.com>
Approved-by: Jon Glassman <jglassman@gitlab.com>
Reviewed-by: Jon Glassman <jglassman@gitlab.com>
Co-authored-by: ngala <ngala@gitlab.com>

doc/user/profile/index.md

@@ -62,6 +62,9 @@ To add new email to your account:
 1. Select **Add email address**.
 1. Verify your email address with the verification email received.
 
+NOTE:
+[Making your email non-public](#set-your-public-email) does not prevent it from being utilised for commit matching.
+
 ## Make your user profile page private
 
 You can make your user profile visible to only you and GitLab administrators.