Point gitlab-shell config example to v2.2.0 tag

doc/update/6.x-or-7.x-to-7.5.md

@@ -159,7 +159,7 @@ git diff 6-0-stable:config/gitlab.yml.example 7-5-stable-ee:config/gitlab.yml.ex
 
 * Make `/home/git/gitlab/config/gitlab.yml` the same as https://gitlab.com/subscribers/gitlab-ee/blob/7-5-stable-ee/config/gitlab.yml.example but with your settings.
 * Make `/home/git/gitlab/config/unicorn.rb` the same as https://gitlab.com/subscribers/gitlab-ee/blob/7-5-stable-ee/config/unicorn.rb.example but with your settings.
-* Make `/home/git/gitlab-shell/config.yml` the same as https://gitlab.com/gitlab-org/gitlab-shell/blob/v2.0.1/config.yml.example but with your settings.
+* Make `/home/git/gitlab-shell/config.yml` the same as https://gitlab.com/gitlab-org/gitlab-shell/blob/v2.2.0/config.yml.example but with your settings.
 * HTTP setups: Make `/etc/nginx/sites-available/gitlab` the same as https://gitlab.com/subscribers/gitlab-ee/blob/7-5-stable-ee/lib/support/nginx/gitlab but with your settings.
 * HTTPS setups: Make `/etc/nginx/sites-available/gitlab-ssl` the same as https://gitlab.com/subscribers/gitlab-ce/blob/7-4-stable-ee/lib/support/nginx/gitlab-ssl but with your settings.
 * Copy rack attack middleware config