Changed "consistancy" to "consistency" in logging.go

logging.go

@@ -37,7 +37,7 @@ const (
 // Logger can be used to replace the standard logging for discordgo
 var Logger func(msgL, caller int, format string, a ...interface{})
 
-// msglog provides package wide logging consistancy for discordgo
+// msglog provides package wide logging consistency for discordgo
 // the format, a...  portion this command follows that of fmt.Printf
 //   msgL   : LogLevel of the message
 //   caller : 1 + the number of callers away from the message source