fix grammar mistake

cmd/kubeadm/app/apis/kubeadm/validation/validation.go

@@ -214,7 +214,7 @@ func ValidateDiscoveryFile(discoveryFile string, fldPath *field.Path) field.Erro
 	}
 
 	if u.Scheme != "https" {
-		allErrs = append(allErrs, field.Invalid(fldPath, discoveryFile, "if an URL is used, the scheme must be https"))
+		allErrs = append(allErrs, field.Invalid(fldPath, discoveryFile, "if a URL is used, the scheme must be https"))
 	}
 	return allErrs
 }

cmd/kubeadm/app/discovery/discovery.go

@@ -65,7 +65,7 @@ func GetValidatedClusterInfoObject(cfg *kubeadmapi.NodeConfiguration) (*clientcm
 	}
 }
 
-// isHTTPSURL checks whether the string is parsable as an URL and whether the Scheme is https
+// isHTTPSURL checks whether the string is parsable as a URL and whether the Scheme is https
 func isHTTPSURL(s string) bool {
 	u, err := url.Parse(s)
 	return err == nil && u.Scheme == "https"

pkg/registry/core/node/strategy.go

@@ -184,7 +184,7 @@ func NodeNameTriggerFunc(obj runtime.Object) []pkgstorage.MatchValue {
 	return []pkgstorage.MatchValue{result}
 }
 
-// ResourceLocation returns an URL and transport which one can use to send traffic for the specified node.
+// ResourceLocation returns a URL and transport which one can use to send traffic for the specified node.
 func ResourceLocation(getter ResourceGetter, connection client.ConnectionInfoGetter, proxyTransport http.RoundTripper, ctx genericapirequest.Context, id string) (*url.URL, http.RoundTripper, error) {
 	schemeReq, name, portReq, valid := utilnet.SplitSchemeNamePort(id)
 	if !valid {