some elements and actions

index.html

@@ -31,7 +31,7 @@
             <h3>SYNOPSIS</h3>
             <div>NITRO is <a href="http://nitrogenproject.com">Nitrogen</a>-like Web Framework for Erlang/OTP.
                  It can be used not only in web applications but also in console applications
-                 that need to perform a HTML5 rendering.
+                 that need to perform an HTML5 rendering.
             </div>
         </section>