UserGuide: Fixed link to Raisonance RLINK.

In section 2.6 USB JLINK based, fixed link to RLINK:
http://www.mcu-raisonance.com/~rlink-debugger-programmer__microcontrollers__tool
~tool__T018:4cn9ziz4bnx6.html

Change-Id: I15f7a1b68b851054e07eefc07a50b4590ebce677
Signed-off-by: Bill Traynor <wmat@alphatroop.com>
Reviewed-on: http://openocd.zylin.com/588
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

doc/openocd.texi

@@ -417,7 +417,7 @@ Raisonance has an adapter called @b{RLink}.  It exists in a stripped-down form o
 
 @itemize @bullet
 @item @b{Raisonance RLink}
-@* Link: @url{http://www.raisonance.com/products/RLink.php}
+@* Link: @url{http://www.mcu-raisonance.com/~rlink-debugger-programmer__microcontrollers__tool~tool__T018:4cn9ziz4bnx6.html}
 @item @b{STM32 Primer}
 @* Link: @url{http://www.stm32circle.com/resources/stm32primer.php}
 @item @b{STM32 Primer2}