typo on homepage

index.html

@@ -136,7 +136,7 @@ body.docs h2 a:visted{
 
 <p>The Chrome Developer Tools (DevTools for short), are a set web authoring and debugging tools
 built into Google Chrome. The DevTools provide web developers deep access into the
-internals of the browser and their web application. This overview of the DevTools 
+internals of the browser and their web application. This overview of the DevTools
 points out the most popular and useful
 features. If you haven't used the DevTools before, start here.
 Even if you're an experienced web developer, you might pick up some tips.</p>
@@ -339,7 +339,7 @@ on YouTube.</p>
     <td>
 
 <h3>Take the course</h3>
-<p>Explore and master the DevTools with our free "Discover DevTools" coursen on <a href="http://discover-devtools.codeschool.com/">Code School</a>. </p>
+<p>Explore and master the DevTools with our free "Discover DevTools" course on <a href="http://discover-devtools.codeschool.com/">Code School</a>. </p>
 
 <p><a href="http://discover-devtools.codeschool.com/"><img src="images/image15.png" width="370px"/></a></p>