Fix user specific ping (ping with exclamation mark) not parsing commands properly

DeukBot4/MessageHandlers/CommandHandler/RequestStructure/CommandRequest.cs

@@ -13,7 +13,7 @@ namespace DeukBot4.MessageHandlers.CommandHandler.RequestStructure
     public class CommandRequest
     {
         private static readonly string CommandNamePattern =
-            "(?:" + CommandHandler.CommandTrigger + "+|<@\\d*> !*)([^ ]+) *(.*)";
+            "(?:" + CommandHandler.CommandTrigger + "+|<@!?\\d*> !*)([^ ]+) *(.*)";
         private static readonly Regex CommandNameMatcher = new Regex(CommandNamePattern);
 
         public Command       Command         { get; }