chore: update readme badges (#68)

Author: almostSouji

README.md

@@ -5,13 +5,14 @@
   </p>
   <br />
   <p>
-    <a href="https://discord.gg/djs"><img src="https://img.shields.io/discord/222078108977594368?color=5865F2&logo=discord&logoColor=white" alt="Discord server" /></a>
+    <a href="https://discord.gg/djs"><img src="https://img.shields.io/badge/join_us-on_discord-5865F2?logo=discord&logoColor=white" alt="Discord server" /></a>
+    <a href="https://opencollective.com/discordjs"><img src="https://img.shields.io/opencollective/backers/discordjs?maxAge=3600&logo=opencollective" alt="backers" /></a>
     <a href="https://www.npmjs.com/package/discord.js"><img src="https://img.shields.io/npm/v/discord.js.svg?maxAge=3600" alt="npm version" /></a>
     <a href="https://www.npmjs.com/package/discord.js"><img src="https://img.shields.io/npm/dt/discord.js.svg?maxAge=3600" alt="npm downloads" /></a>
   </p>
   <p>
-		<a href="https://vercel.com/?utm_source=discordjs&utm_campaign=oss"><img src="https://raw.githubusercontent.com/discordjs/discord.js/main/.github/powered-by-vercel.svg" alt="Vercel" /></a>
-	</p>
+    <a href="https://vercel.com/?utm_source=discordjs&utm_campaign=oss"><img src="https://raw.githubusercontent.com/discordjs/discord.js/main/.github/powered-by-vercel.svg" alt="Vercel" /></a>
+  </p>
 </div>
 
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