samples: Update comments in Task samples (#1418)

Author: averikitsch

tasks/snippets/src/main/java/com/example/task/CreateHttpTask.java

@@ -39,7 +39,7 @@ public static void main(String[] args) throws Exception {
       // projectId = "my-project-id";
       // queueName = "my-queue";
       // location = "us-central1";
-      // url = "https://example.com/hellohandler";
+      // url = "https://example.com/taskhandler";
       String payload = "hello";
 
       // Construct the fully qualified queue name.

tasks/snippets/src/main/java/com/example/task/CreateHttpTaskWithToken.java

@@ -40,7 +40,7 @@ public static void main(String[] args) throws Exception {
       // projectId = "my-project-id";
       // queueName = "my-appengine-queue";
       // location = "us-central1";
-      // url = "https://example.com/tasks/create";
+      // url = "https://example.com/taskhandler";
       String payload = "hello";
 
       // Construct the fully qualified queue name.