Fix typo

README.md

@@ -303,7 +303,7 @@ implementation available from the network.
     Runtime.getRuntime().addShutdownHook(new Thread() {
       @Override
       public void run() {
-        // Use stderr here since the logger may has been reset by its JVM shutdown hook.
+        // Use stderr here since the logger may have been reset by its JVM shutdown hook.
         System.err.println("*** shutting down gRPC server since JVM is shutting down");
         HelloWorldServer.this.stop();
         System.err.println("*** server shut down");