Corrected msg.sentences descriptions

Author: chughts

services/tone_analyzer/v3.html

@@ -64,7 +64,7 @@
     <p>The text to analyze should be passed in on <b>msg.payload</b>.</p>
     <p>The service response will be returned on <b>msg.response</b>.</p>
     <p>The tone and sentances can be programmaticaly set in <code>msg.tones</code>
-    and <code>msg.tones</code></p>
+    and <code>msg.sentences</code></p>
     <p>Usng the node editor dialog users can filter the results by tone (emotion, writing or social) and 
       whether to include sentence-level analysis.</p>
     <p>For more information about the Tone Analyzer service, read the <a href="https://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/tone-analyzer.html">documentation</a>.</p>