fix: client rebrand

Author: Eveeifyeve

src/content/docs/index.mdx

@@ -22,10 +22,10 @@ import { Card, CardGrid } from '@astrojs/starlight/components';
 
 <CardGrid stagger>
 <Card title="Essential" icon="approve-check">
-   Functionality for Minecraft Modpack Launchers.
+   Functionality for Minecraft Client Launchers.
 </Card>
 <Card title="Simplifies" icon="puzzle">
-   Simplifies Minecraft Modpack Launching Building.
+   Simplifies Minecraft Client Launching Building.
 </Card>
 <Card title="Fast" icon="rocket">
    Performs better than other frameworks in authentication and launching.