v.net manual: link to Vector Network Analysis Tool

vector/v.net/v.net.html

@@ -212,7 +212,8 @@ v.net operation=turntable in=railroads out=railroads_ttb
 
 <em>
 <a href="g.gui.vdigit.html">g.gui.vdigit</a>,
-<a href="v.edit.html">v.edit</a>
+<a href="v.edit.html">v.edit</a>,
+<a href="wxGUI.vnet.html">Vector Network Analysis Tool</a>
 </em>
 
 <p>