fix: add style.css for error-handling.mdx (#512)

Author: Rezn1r

docs/popular-topics/error-handling.mdx

@@ -8,6 +8,8 @@ import {
     DiscordInteraction,
     DiscordMessage,
 } from "discord-message-components/packages/react";
+import "discord-message-components/packages/react/dist/style.css";
+
 import DiscordComponent, { defaultOptions } from "@site/src/components/DiscordComponent";
 
 ## About