message: docs(dev): add a note about CORS in dev guide
diff: @@ -165,7 +165,7 @@ yarn format:fix
  ### Prepare and serve datasets locally
  - Build a fresh dataset directory as described in the [nextstrain/nextclade_data](https://github.com/nextstrain/nextclade_data) repo. At the time of writing it simply means to run `./scripts/rebuild` and to observe the `data_output/` created, containing the dataset files and associated index files
  -- Serve datasets directory locally using any static file server. For example, using `serve` package from NPM:
  +- Serve datasets directory locally using any static file server. [CORS](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) should be enabled on the server. For example, using `serve` package from NPM:
  ```bash
  npx serve --cors --listen=tcp://0.0.0.0:27722 data_output/
  ```
  