fixed name on link to make it easier to find

doc/README.md

@@ -22,7 +22,7 @@
 - [Security](security/README.md) Learn what you can do to further secure your GitLab instance.
 - [Update](update/README.md) Update guides to upgrade your installation.
 - [Audit Events](administration/audit_events.md) Check how user access changed in projects and groups.
-- [Branded login page](customization/branded_login_page.md) Change the login page appearance for your GitLab instance.
+- [Changing the appearance of the login page](customization/branded_login_page.md) Change the login page appearance for your GitLab instance.
 - [Help message](customization/help_message.md) Set information about administrators of your GitLab instance.
 - [Git Hooks](git_hooks/git_hooks.md) Advanced push rules for your project.
 - [Email](tools/email.md) Email GitLab users from GitLab