slight tweak to the !reaction reply string

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

dice/ircplugin.py

@@ -118,7 +118,7 @@ class Dice(Plugin):
         else:
             result_str = f"9{label}"
 
-        return self.bot.reply(event, f"{nick}: the current disposition is: {result_str} 14({roll})")
+        return self.bot.reply(event, f"{nick}: the current disposition is {result_str} 14({roll})")
 
     def handle_roll(self, connection, event, match):
         """Handle the !roll command which covers most common dice stuff."""