docs: change name of thing

Author: egekorkan

content/services.html

@@ -102,7 +102,7 @@ <h2>Online Things for Testing</h2>
         </ul>
       </li>
       <li>
-        <b>Presence Sensor:</b> This is a simpler simulation of the coffee machine above. 
+        <b>Simple Coffee Machine:</b> This is a simpler simulation of the coffee machine above. 
         The interactions are possible via HTTP.
         TD:
         <ul>