Add the UX design channel to both roles

Author: dhruvkb

content/community/community-team/community-building-roles/contents.lr

@@ -26,6 +26,7 @@ You can use the following channels to engage with the community:
   on our upcoming tweets
 * Invitation to our Slack channels
   * [Newbie channels](/community/community-team/engagement-channels/#newbie-channels)
+  * [UX design channels](/community/community-team/engagement-channels/#ux-design-channel)
   * [Community Team channel](/community/community-team/engagement-channels/#community-team-channel)
 * Invitation to our [meetings](/community/community-team/engagement-channels/#meetings)
 * Membership in the [Community Team mailing list](/community/community-team/engagement-channels/#community-team-group)

content/community/community-team/project-roles/contents.lr

@@ -26,6 +26,7 @@ You can use the following channels to engage with the community:
   on the relevant repos on GitHub
 * Invitation to our Slack channels
   * [Newbie channels](/community/community-team/engagement-channels/#newbie-channels)
+  * [UX design channels](/community/community-team/engagement-channels/#ux-design-channel)
   * [Community Team channel](/community/community-team/engagement-channels/#community-team-channel)
 * Invitation to our [meetings](/community/community-team/engagement-channels/#meetings)
 * Membership in the [Community Team mailing list](/community/community-team/engagement-channels/#community-team-group)