fix(command-handling): Add MessageFlags to base template (#1618)

Co-authored-by: Jiralite <[email protected]>

Author: babofitos

guide/creating-your-bot/command-handling.md

@@ -23,7 +23,7 @@ In your `index.js` file, make these additions to the base template:
 ```js {1-3,8}
 const fs = require('node:fs');
 const path = require('node:path');
-const { Client, Collection, Events, GatewayIntentBits } = require('discord.js');
+const { Client, Collection, Events, GatewayIntentBits, MessageFlags } = require('discord.js');
 const { token } = require('./config.json');
 
 const client = new Client({ intents: [GatewayIntentBits.Guilds] });