Fix minor typo in Role Based Access Control
# Role Based Access Control
-This example demonstrate how to apply an nginx ingress controller with role based access control
+This example demonstrates how to apply an nginx ingress controller with role based access control
## Overview
@@ -62,7 +62,7 @@ have access to a `configmap` using the resourceName `ingress-controller-leader-n
* `configmaps`: create
This resourceName is the concatenation of the `election-id` and the
-`ingress-class` as defined by the ingress-controller, which default to:
+`ingress-class` as defined by the ingress-controller, which defaults to:
* `election-id`: `ingress-controller-leader`
* `ingress-class`: `nginx`
