DAP firmware can be configured with MDK Plus; was MDK Pro

CMSIS/DoxyGen/DAP/src/dap_config.txt

@@ -26,8 +26,8 @@ requirements:
   
 CMSIS-DAP Firmware
 ------------------
-The CMSIS-DAP Firmware can be configured for a new Debug Unit using the 
-<a href="http://www.keil.com/mdk5" target="_blank">Keil MDK Professional Edition</a>.
+The CMSIS-DAP Firmware can be configured for a new Debug Unit using at least the 
+<a href="http://www.keil.com/mdk5" target="_blank">Keil MDK Plus Edition</a>.
 Reference implementations are provided as source code with complete project files
 and may be used as starting point for the firmware deployment to a new Debug Unit.