samples: added region tags (#738)

* Tag fix

* rerun conventional commit

Author: galz10

dialogflow/snippets/src/main/dialogflow/Example.java

@@ -1,4 +1,22 @@
-package com.example;
+/*
+ * Copyright 2021 Google LLC
+ *
+ * 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.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dialogflow;
+
+// [START dialogflow_webhook]
 
 import com.google.cloud.functions.HttpFunction;
 import com.google.cloud.functions.HttpRequest;
@@ -46,3 +64,4 @@ public void service(HttpRequest request, HttpResponse response) throws Exception
     writer.write(o.toString());
   }
 }
+// [END dialogflow_webhook]

dialogflow/snippets/src/test/dialogflow/ExampleIT.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package dialogflow.cx;
+package dialogflow;
 
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Mockito.when;