UserGuide: Updated link to Versaloon-Link tool.

In section '2.8 USB Other' updated the URL to the Versaloon-Link to:
http://www.versaloon.com

Change-Id: Idd92333cb3d87d1b89dfb282134332387df5a0fc
Signed-off-by: Bill Traynor <wmat@alphatroop.com>
Reviewed-on: http://openocd.zylin.com/592
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

doc/openocd.texi

@@ -454,7 +454,7 @@ The simplest solution is to get linux to ignore the ST-LINK using one of the fol
 @* Link: @url{http://tools.asix.net/prg_presto.htm}
 
 @item @b{Versaloon-Link}
-@* Link: @url{http://www.simonqian.com/en/Versaloon}
+@* Link: @url{http://www.versaloon.com}
 
 @item @b{ARM-JTAG-EW}
 @* Link: @url{http://www.olimex.com/dev/arm-jtag-ew.html}