install/run instructions revision

Author: phantomics

content/en/_index.html

@@ -81,7 +81,7 @@ <h3>Have other questions?</h3><br />
   it on popular platforms or build it for new ones.
 </p>
 <div class="mx-auto">
-	<a class="btn btn-lg btn-danger mr-3 mb-4" href="{{< relref "software/install_and_run" >}}">
+	<a class="btn btn-lg btn-danger mr-3 mb-4" href="{{< relref "software/install-and-run" >}}">
 		Running Medley <i class="fas fa-arrow-alt-circle-right ml-2"></i>
 	</a>
 </div>