refactor: do not capitalise developers

guide/creating-your-bot/main-file.md

@@ -17,7 +17,7 @@ const { token } = require('./config.json');
 const client = new Client({ intents: [GatewayIntentBits.Guilds] });
 
 // When the client is ready, run this code (only once).
-// The distinction between `client: Client<boolean>` and `readyClient: Client<true>` is important for TypeScript Developers.
+// The distinction between `client: Client<boolean>` and `readyClient: Client<true>` is important for TypeScript developers.
 // It makes some properties non-nullable.
 client.once(Events.ClientReady, readyClient => {
 	console.log(`Ready! Logged in as ${readyClient.user.tag}`);