test(assistant): Fix failing unit tests

Author: lpatino10

assistant/src/test/java/com/ibm/watson/developer_cloud/assistant/v1/AssistantTest.java

@@ -155,7 +155,7 @@ public void testSendMessage() throws IOException, InterruptedException {
 
     String path = StringUtils.join(PATH_MESSAGE, "?", VERSION, "=2018-02-16");
     assertEquals(path, request.getPath());
-    assertArrayEquals(new String[] { "Great choice! Playing some jazz for you" },
+    assertArrayEquals(new String[] { "Great choice! Playing some jazz for you." },
         serviceResponse.getOutput().getText().toArray(new String[0]));
     assertEquals(request.getMethod(), "POST");
     assertNotNull(request.getHeader(HttpHeaders.AUTHORIZATION));
@@ -197,7 +197,7 @@ public void testSendMessageWithAlternateIntents() throws IOException, Interrupte
 
     String path = StringUtils.join(PATH_MESSAGE, "?", VERSION, "=2018-02-16");
     assertEquals(path, request.getPath());
-    assertArrayEquals(new String[] { "Great choice! Playing some jazz for you" },
+    assertArrayEquals(new String[] { "Great choice! Playing some jazz for you." },
         serviceResponse.getOutput().getText().toArray(new String[0]));
     assertEquals(request.getMethod(), "POST");
     assertNotNull(request.getHeader(HttpHeaders.AUTHORIZATION));