Fixed mailing list link for SIG-Auth

sig-auth/README.md

@@ -16,9 +16,9 @@ Proactive or general security discussion about the API server should go to kuber
 
 
 Links/info:
-* Mailing list: https://groups.google.com/forum/#!pendingmember/kubernetes-sig-auth/apply
+* Mailing list: https://groups.google.com/forum/#!forum/kubernetes-sig-auth
 * Github team: https://github.com/orgs/kubernetes/teams/sig-auth (Use ‘@kubernetes/sig-auth’ on github to notify team members.)
 * Slack channel: https://kubernetes.slack.com/messages/sig-auth/
 * Meeting frequency & time:  Biweekly on Wednesdays, 11am Pacific (see agenda for which Wednesdays)
 * Agenda & meeting notes: https://docs.google.com/document/d/1woLGRoONE3EBVx-wTb4pvp4CI7tmLZ6lS26VTbosLKM/edit#
-* Hangout link: [https://zoom.us/my/k8s.sig.auth](https://zoom.us/my/k8s.sig.auth)
+* Hangout link: [https://zoom.us/my/k8s.sig.auth](https://zoom.us/my/k8s.sig.auth)