examples/grpc-client: minor corrections in the dex client example.

examples/grpc-client/README.md

@@ -55,7 +55,7 @@ Running the gRPC client will cause the following API calls to be made to the ser
 Run the following command to destroy all the credentials files that were created by the `cert-gen` script:
 
 ```
-./examples/grpc-client/cert-destory
+./examples/grpc-client/cert-destroy
 ```
 [api-proto]: ../../api/api.proto
 [client]: client.go

examples/grpc-client/client.go

@@ -49,7 +49,7 @@ func main() {
 	flag.Parse()
 
 	if *clientCrt == "" || *caCrt == "" || *clientKey == "" {
-		log.Fatal("Please provide CA & client certificates and client key. Usage: ./client -ca_crt=<path ca.crt> -client_crt=<path client.crt> -client_key=<path client key>")
+		log.Fatal("Please provide CA & client certificates and client key. Usage: ./client --ca-crt=<path ca.crt> --client-crt=<path client.crt> --client-key=<path client key>")
 	}
 
 	client, err := newDexClient("127.0.0.1:5557", *caCrt, *clientCrt, *clientKey)