Fixed link

Former-commit-id: bbd4894961f0e1544f9517c7d4f97f2dabf9fa76

extension/ui/pages/help.html

@@ -485,7 +485,7 @@
 					<li>Polish translation done by xesarni (<a href="https://github.com/xesarni">GitHub profile</a>)
 					</li>
 					<li>Russian translation done by rstp14 (<a href="https://github.com/rstp14">GitHub profile</a>)</li>
-					<li>Spanish translation done by strel (https://github.com/strel)</li>
+					<li>Spanish translation done by strel (<a href="https://github.com/strel">GitHub profile</a>)</li>
 				</ul>
 			</li>
 			<li> <a id="icons">Icons</a>