Changed the link for the install button on the front landing page to redirect user to the install page instead of the readthedocs install in a new tab

Author: cameronoelsen

index.html

@@ -41,7 +41,7 @@ <h4 class="jumbotron-text">Open source, interactive data science and scientific
                     <h3 class="prompt-header">Ready to get started?</h3>
                     <div>
                         <a class="orange-button" href="https://try.jupyter.org/" target="_blank">Try it in your browser</a>
-                        <a class="orange-button install-button" href="https://jupyter.readthedocs.io/en/latest/install.html" target="_blank">Install the Notebook</a>
+                        <a class="orange-button install-button" href="install.html">Install the Notebook</a>
                     </div>
                 </div>
             </div>