fix some typos

communication/meeting-notes-archive/q1-2_2018_community_meeting_minutes.md

@@ -1042,7 +1042,7 @@
         **Help Wanted?**
 
         *   [SIG UI](https://github.com/kubernetes/community/blob/master/sig-ui/README.md) is looking for additional contributors (with javascript and/or go knowledge) and maintainers
-            *   [Piotr](https://github.com/bryk) and and [Konrad](https://github.com/konryd) from google have offered to bring folks up to speed.
+            *   [Piotr](https://github.com/bryk) and [Konrad](https://github.com/konryd) from google have offered to bring folks up to speed.
             *   Take a look at open issues to get started or reach out to their slack channel, mailing list, or next meeting.
             *   SIG UI mailing list: [https://groups.google.com/forum/#!forum/kubernetes-sig-ui](https://groups.google.com/forum/#!forum/kubernetes-sig-ui)
 

keps/sig-cluster-lifecycle/0015-kubeadm-join-control-plane.md

@@ -232,7 +232,7 @@ should copy control plane certificates from an existing control plane instance,
 > in the machine where it is running, so it is not possible to copy automatically
 > certificates from remote locations.
 
-Please note that strictly speaking only ca, front-proxy-ca certificate and and service account key pair
+Please note that strictly speaking only ca, front-proxy-ca certificate and service account key pair
 are required to be equal among all control plane instances. Accordingly:
 
 - `kubeadm join --control-plane` will check for the mandatory certificates and fail fast if