Add merge request reviewer label to me, Douwe and Rober

source/team/index.html

@@ -16,6 +16,7 @@ team_members:
   maintains: |
               <li>Maintainer of <a href="https://gitlab.com/gitlab-org/gitlab-ce/">GitLab CE</a></li>
               <li>Maintainer of <a href="https://gitlab.com/gitlab-org/gitlab-ee/">GitLab EE</a></li>
+              <li>Merge Request reviewer</li>
   story:  |
           Dmitriy started GitLab in september 2011 and has released it every month on the 22nd since then.
           He wanted to make a great and free project management system that he could use every day.
@@ -124,6 +125,7 @@ team_members:
   maintains:  |
               <li>Maintainer of <a href="https://dev.gitlab.org/gitlab/license-app">license-app</a> (internal)</li>
               <li>Maintainer of <a href="https://dev.gitlab.org/gitlab/gitlab-license">gitlab-license</a> (internal)</li>
+              <li>Merge Request reviewer</li>
   story:  |
           Douwe caught the programming virus at the age of 9, got his first freelance job 2 years later, and has spent the years that followed gaining experience with a wide range of technologies&mdash;both by himself and as lead developer at two startups.
           Some 3 years ago, he found Ruby and fell in love with the language and the open-source community surrounding it, making him a perfect fit for GitLab.
@@ -189,6 +191,7 @@ team_members:
   gitlab: rspeicher
   maintains:  |
               <li>Maintainer of <a href="https://gitlab.com/gitlab-com/www-gitlab-com">about-gitlab-com</a></li>
+              <li>Merge Request reviewer</li>
   story:  |
           Before joining GitLab the company in 2015, Robert was
           already an active member of the GitLab community beginning in 2012,