Document #github-management slack channel

Author: nikhita

github-management/opening-a-request.md

@@ -13,7 +13,8 @@ If you need help with the following:
 - Other repository and configuration issues
 
 Please open an issue against the [kubernetes/org] repository describing your
-issue. If your request is urgent, please escalate to **[@kubernetes/owners]**.
+issue. If your request is urgent, please escalate to **[@kubernetes/owners]**
+or reach out on `#github-management` in Slack.
 
 To create a new team, add a member to a team or rename a team, please
 create a PR against the [kubernetes/org] repository according to

sig-contributor-experience/README.md

@@ -97,6 +97,8 @@ Manages and controls Github permissions, repos, and groups, including Org Member
 - **Owners:**
   - https://raw.githubusercontent.com/kubernetes/community/master/github-management/OWNERS
   - https://raw.githubusercontent.com/kubernetes/org/master/OWNERS
+- **Contact:**
+  - Slack: [#github-management](https://kubernetes.slack.com/messages/github-management)
 - **Meetings:**
   - GitHub Administration Subproject: [Thursdays at 09:30 PT (Pacific Time)](https://zoom.us/j/442435463) (monthly on 4th Thursday). [Convert to your timezone](http://www.thetimezoneconverter.com/?t=09:30&tz=PT%20%28Pacific%20Time%29).
     - [Meeting notes and Agenda](https://docs.google.com/document/d/1IiVrr1hcFWmbboExk971FsMUGfr2Wp68mdMribCuzLs/edit).

sigs.yaml

@@ -1172,6 +1172,8 @@ sigs:
   - name: github-management
     description: Manages and controls Github permissions, repos, and groups, including
       Org Membership.
+    contact:
+      slack: github-management
     owners:
     - https://raw.githubusercontent.com/kubernetes/community/master/github-management/OWNERS
     - https://raw.githubusercontent.com/kubernetes/org/master/OWNERS