Update index.html

Author: danielpeintner

index.html

@@ -134,7 +134,7 @@ <h2>Terminology</h2>
 
       <p>
         In addition, this specification introduces further definitions below.
-        These terms sometimes don't use the term <em>WoT</em>. Please use the "WoT" prefix  outside of the context of Web of Things.
+        These terms sometimes don't use the term <em>WoT</em>. Please use the "WoT" prefix outside of the context of Web of Things.
       </p>
 
       <dl>