Fix link to documentation

index.html

@@ -62,7 +62,7 @@
 						<li class="publishView" title="Publish" >Files</li>
 						<li class="debugView" title="Debugger">Debugger</li>
 						<li class="staticanalysisView" title="Static Analysis">Analysis</li>
-						<li id="helpButton"><a href="https://solidity.readthedocs.org" target="_blank" title="Open Documentation">Docs</a></li>
+						<li id="helpButton"><a href="https://remix.readthedocs.org" target="_blank" title="Open Documentation">Docs</a></li>
 					</ul>
 				</div>
 				<div id="optionViews" class="settingsView">