examples: Fix typo in comments (#6721)

examples/src/main/java/io/grpc/examples/manualflowcontrol/ManualFlowControlClient.java

@@ -66,7 +66,7 @@ public class ManualFlowControlClient {
             // Note: the onReadyHandler's invocation is serialized on the same thread pool as the incoming
             // StreamObserver's onNext(), onError(), and onComplete() handlers. Blocking the onReadyHandler will prevent
             // additional messages from being processed by the incoming StreamObserver. The onReadyHandler must return
-            // in a timely manor or else message processing throughput will suffer.
+            // in a timely manner or else message processing throughput will suffer.
             requestStream.setOnReadyHandler(new Runnable() {
               // An iterator is used so we can pause and resume iteration of the request data.
               Iterator<String> iterator = names().iterator();

examples/src/main/java/io/grpc/examples/manualflowcontrol/ManualFlowControlServer.java

@@ -46,8 +46,8 @@ public class ManualFlowControlServer {
         //
         // Note: the onReadyHandler's invocation is serialized on the same thread pool as the incoming StreamObserver's
         // onNext(), onError(), and onComplete() handlers. Blocking the onReadyHandler will prevent additional messages
-        // from being processed by the incoming StreamObserver. The onReadyHandler must return in a timely manor or else
-        // message processing throughput will suffer.
+        // from being processed by the incoming StreamObserver. The onReadyHandler must return in a timely manner or
+        // else message processing throughput will suffer.
         class OnReadyHandler implements Runnable {
           // Guard against spurious onReady() calls caused by a race between onNext() and onReady(). If the transport
           // toggles isReady() from false to true while onNext() is executing, but before onNext() checks isReady(),