Update README.md

Author: charlesvien

README.md

@@ -43,7 +43,7 @@ The CLI requires [Bun](https://bun.sh/docs/installation) and [jj](https://martin
 pnpm --filter @array/cli run link
 ```
 
-See [CLI.md](./CLI.md) for detailed CLI documentation.
+See the [arr CLI README](./apps/cli/README.md) for detailed documentation.
 
 ### Running in Development