Redirect blog post to handbook
This MR redirects https://about.gitlab.com/blog/2016/03/03/start-with-an-issue/ to this page: https://handbook.gitlab.com/handbook/communication/#start-with-a-merge-request. The blog post is out of date.
This MR redirects https://about.gitlab.com/blog/2016/03/03/start-with-an-issue/ to this page: https://handbook.gitlab.com/handbook/communication/#start-with-a-merge-request. The blog post is out of date.