Correct link href.

samples/index.html

@@ -98,7 +98,7 @@ <h2>Developer's Guide</h2>
 				</ul>
 					<p>When you have the basics sorted out, feel free to browse some more advanced sections like:</p>
 				<ul>
-					<li><a href="https://ckeditor.com/docs/ckeditor4/latest/features.html">Features Overview</a> &ndash; Descriptions and samples of various editor features.</li>
+					<li><a href="https://ckeditor.com/docs/ckeditor4/latest/features/index.html">Features Overview</a> &ndash; Descriptions and samples of various editor features.</li>
 					<li><a href="https://ckeditor.com/docs/ckeditor4/latest/guide/plugin_sdk_intro.html">Plugin SDK</a>, <a href="https://ckeditor.com/docs/ckeditor4/latest/guide/widget_sdk_intro.html">Widget SDK</a>, and <a href="https://ckeditor.com/docs/ckeditor4/latest/guide/skin_sdk_intro.html">Skin SDK</a> &ndash; Useful when you want to create your own editor components.</li>
 				</ul>
 			</section>