Merge pull request #874 from jojojojojoj5564656465465/main

Update index.mdx

Author: fabian-hiller

website/src/routes/guides/(get-started)/installation/index.mdx

@@ -57,7 +57,7 @@ import * as v from 'valibot';
 For Node, Deno and Bun, you can add me to your project with a single command via your favorite package manager.
 
 ```bash
-deno add @valibot/valibot          # deno
+deno add jsr:@valibot/valibot      # deno
 npx jsr add @valibot/valibot       # npm
 yarn dlx jsr add @valibot/valibot  # yarn
 pnpm dlx jsr add @valibot/valibot  # pnpm