Editorial: Add semicolon to clearWatch() example

Author: reillyeon

index.html

@@ -191,7 +191,7 @@ <h3>
         <aside class="example" title="Using clearWatch()">
           <pre class="js">
             const watchId = navigator.geolocation.watchPosition(
-              position =&gt; console.log(position)
+              position =&gt; console.log(position);
             );
 
             function buttonClickHandler() {