Document release post handbook
Closes https://gitlab.com/gitlab-com/www-gitlab-com/issues/1240
Documents release posts in the handbook. Especially goes through the steps to style major release posts.
Todo:
-
Link from blog handbook (Marcia) -
Review/feedback (Dimitrie) -
Review/feedback (frontend) -
Review/feedback (Victor)
@dimitrieh @annabeldunstone @jschatz1 @victorwu feedback pls! :)
Review Apps link: https://document-release-post-handbook.about.gitlab.com/handbook/marketing/blog/release-posts/
cc/ @job @SeanPackham FYI