fix all the typos across the project

Kubernetes-commit: 48388fec7eaad4ac8d84fbe20673ffacf41964a1

pkg/authorization/union/union.go

@@ -20,7 +20,7 @@ limitations under the License.
 // subauthorizer returns a NoOpinion, then the union authorizer moves onto the
 // next authorizer or, if the subauthorizer was the last authorizer, returns
 // NoOpinion as the aggregate decision. I.e. union authorizer creates an
-// aggregate decision and supports short-circut allows and denies from
+// aggregate decision and supports short-circuit allows and denies from
 // subauthorizers.
 package union
 

pkg/endpoints/metrics/metrics.go

@@ -86,7 +86,7 @@ var (
 		},
 		[]string{"requestKind"},
 	)
-	// Becasue of volatality of the base metric this is pre-aggregated one. Instead of reporing current usage all the time
+	// Because of volatality of the base metric this is pre-aggregated one. Instead of reporing current usage all the time
 	// it reports maximal usage during the last second.
 	currentInflightRequests = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{

pkg/storage/value/encrypt/envelope/grpc_service.go

@@ -33,10 +33,10 @@ import (
 )
 
 const (
-	// Now only supportied unix domain socket.
+	// Now only supported unix domain socket.
 	unixProtocol = "unix"
 
-	// Current version for the protocal interface definition.
+	// Current version for the protocol interface definition.
 	kmsapiVersion = "v1beta1"
 
 	// The timeout that communicate with KMS server.