Fix #56

Author: LukyVj

index.html

@@ -474,7 +474,7 @@ <h2 class='title'>Without arguments</h2>
       </div>
       <div class='row mixin'>
         <header>
-          <h3>last-child</h3>
+          <h3>first-child</h3>
         </header>
         <pre><code><span class="param"> @include</span> first-child()&#x000A;</code></pre>
         <ul class='first-child'>