Merge pull request #5560 from nikhita/steering-usergroup-take-3

slack-config: rename steering usergroup to steering-members

Author: k8s-ci-robot

communication/slack-config/usergroups.yaml

@@ -169,7 +169,7 @@ usergroups:
       - microwavables
       - pabloschuhmacher
 
-  - name: steering
+  - name: steering-members
     long_name: Kubernetes Steering Committee
     description: Members of the Kubernetes Steering Committee
     channels: