fix a link in the doc

docs/jflow_install.html

@@ -100,7 +100,7 @@
 			    	<h1 class="page-header">Step #4 <small>configure the application</small></h1>
 				  	<p>You must edit the <code>application.properties</code> file to configure the application.
 				  	Here under the required parameters, for advanced configuration please see
-				  	<a href="./jflow-advanced-configuration.html">this page</a>...</p>
+				  	<a href="./jflow_advanced_configuration.html">this page</a>...</p>
 				  	<pre class="pre-hl "><code class="ini">[global]
 # uncomment and set if not in the PATH, should be version >= 4.4.3
 #makeflow = /usr/bin/makeflow