Correct path that is provided in git clone instructions

Author: necolas

index.html

@@ -43,7 +43,7 @@ <h2>Source code</h2>
             <p>Available on GitHub: <a href="http://github.com/necolas/normalize.css">necolas/normalize.css</a></p>
             <p>Download it in either <a href="http://github.com/necolas/normalize.css/zipball/master">zip</a> or <a href="http://github.com/necolas/normalize.css/tarball/master">tar</a> formats.</p>
             <p>Clone the project with <a href="http://git-scm.com">Git</a> by running:</p>
-            <pre>$ git clone git://github.com/necolas/normalize.css</pre>           
+            <pre>$ git clone git://github.com/necolas/normalize.css.git</pre>           
 
             <h2>Acknowledgements</h2>
             <p>Normalize.css is a project by Nicolas Gallagher and Jonathan Neal.</p>