Fix link to isue tracker integration page
Created by: Razer6
Link to issue integegration page was wrong. This results in a 500 error on http://doc.gitlab.com
/cc @dosire
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: Razer6
Link to issue integegration page was wrong. This results in a 500 error on http://doc.gitlab.com
/cc @dosire