Added a few missing <code> tags.

Author: simensen

source/index.html

@@ -27,7 +27,7 @@ <h2>The Toolbox</h2>
     <div class="row-fluid">
         <div class="tool well well-small span4">
             <h3>Builder <i class="icon-wrench pull-right"></i></h3>
-            <p>Builder constructs a nested HttpKernelInterface decorator tree. It models it as a stack of middlewares.</p>
+            <p>Builder constructs a nested <code>HttpKernelInterface</code> decorator tree. It models it as a stack of middlewares.</p>
             <p><a class="btn btn-primary" href="https://github.com/stackphp/builder">Learn More</a></p>
         </div>
         <div class="tool well well-small span4">
@@ -37,7 +37,7 @@ <h3>Session <i class="icon-eye-open pull-right"></i></h3>
         </div>
         <div class="tool well well-small span4">
             <h3>URL Map <i class="icon-map-marker pull-right"></i></h3>
-            <p>Provides the ability to map paths to specific HttpKernelInterface applications and dispatches accordingly.</p>
+            <p>Provides the ability to map paths to specific <code>HttpKernelInterface</code> applications and dispatches accordingly.</p>
             <p><a class="btn btn-primary" href="https://github.com/stackphp/url-map">Learn More</a></p>
         </div>
     </div>