Link to wiki page instead of devdocs for now.

index.html

@@ -85,7 +85,7 @@
         <div class="col-md-7">
           <h2 class="featurette-heading">How can I use it?</h2>
           <p class="lead">Go Ethereum is available either as a standalone client called Geth that you can install on pretty much any operating system, or as a library that you can embed in your Go, Android or iOS projects.</p>
-          <p class="lead">See our <a href="./install">installation guide</a> or our <a href="./downloads">developer guide</a> for details!</p>
+          <p class="lead">See our <a href="./install">installation guide</a> or our <a href="https://github.com/ethereum/go-ethereum/wiki" target="_blank">wiki pages</a> for details!</p>
         </div>
       </div>
       <hr/>