Update index

cards.md

@@ -33,7 +33,7 @@ order: -1
 			<li><a href="external/contribute/git-clients">Git clients</a></li>
 			<li><a href="external/contribute/install-git">Installation of Git</a></li>
 			<li><a href="external/contribute/markdown">Markdown</a></li>
-			<li><a href="external/contribute/mirror-fork">How to mirror your fork automatically</a></li>
+			<li><a href="external/contribute/mirror-fork">Mirror fork automatically</a></li>
 
 		</ul>
 	</div>