Fix a javadoc error

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=146934558

java/google/registry/whois/WhoisCommandFactory.java

@@ -1,11 +1,11 @@
 // Copyright 2017 The Nomulus Authors. All Rights Reserved.
-// 
+//
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
-// 
+//
 //     http://www.apache.org/licenses/LICENSE-2.0
-// 
+//
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -22,7 +22,7 @@ import java.net.InetAddress;
  * A class used to configure WHOIS commands.
  *
  * <p>To add custom commands, extend this class, then configure it in
- * {@link ConfigModule#provideWhoisCommandFactoryClass()}.
+ * {@link ConfigModule#provideWhoisCommandFactoryClass}.
  */
 public class WhoisCommandFactory {