Update discord.go

Added bolding around the name, and split the name vs message with ": " on line 338

bridge/discord/discord.go

@@ -335,7 +335,7 @@ func (b *Bdiscord) handleEventBotUser(msg *config.Message, channelID string) (st
 	}
 
 	m := discordgo.MessageSend{
-		Content:         msg.Username + msg.Text,
+		Content:         "**" + msg.Username + "**: " + msg.Text,
 		AllowedMentions: b.getAllowedMentions(),
 	}