Fix "Add to Slack" link on the GitLab Slack App
The GitLab Slack Application's "Add to Slack" button currently links to https://gitlab.com/profile/slack/edit, but it should be https://gitlab.com/-/profile/slack/edit.
Edited by Tom Quirk
The GitLab Slack Application's "Add to Slack" button currently links to https://gitlab.com/profile/slack/edit, but it should be https://gitlab.com/-/profile/slack/edit.