docs(sprites): link to fly.io/sprites and the Fly.io dashboard

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: kylemclaren

docs/deploy/sprites.mdx

@@ -3,11 +3,11 @@ title: "Sprites"
 description: "Deploy Sandbox Agent inside a Fly.io Sprite."
 ---
 
-[Sprites](https://sprites.dev) are persistent Linux VMs from Fly.io that boot in seconds, sleep when idle, and keep their filesystem across restarts.
+[Sprites](https://fly.io/sprites) are persistent Linux VMs from Fly.io that boot in seconds, sleep when idle, and keep their filesystem across restarts.
 
 ## Prerequisites
 
-- `SPRITES_TOKEN` (run `sprite org auth`, or create a token at [sprites.dev/account](https://sprites.dev/account))
+- `SPRITES_TOKEN` (run `sprite org auth`, or create a token in the [Fly.io dashboard](https://fly.io/dashboard))
 - `ANTHROPIC_API_KEY` or `OPENAI_API_KEY`
 
 ## TypeScript example