message: docs: updated links for country map scripts
diff: @@ -54,8 +54,8 @@ The Country Maps visualization already ships with the maps for the following cou
  To add a new country to the list, you'd have to edit files in
  [@superset-ui/legacy-plugin-chart-country-map](https://github.com/apache-superset/superset-ui/tree/master/plugins/legacy-plugin-chart-country-map).
  -1. Generate a new GeoJSON file for your country following the guide in [this Jupyter notebook](https://github.com/apache-superset/superset-ui/blob/master/plugins/legacy-plugin-chart-country-map/scripts/Country%20Map%20GeoJSON%20Generator.ipynb).
  -2. Edit the countries list in [legacy-plugin-chart-country-map/src/countries.js](https://github.com/apache-superset/superset-ui/blob/master/plugins/legacy-plugin-chart-country-map/src/countries.js).
  -3. Ping one of the Superset committers to get the `@superset-ui/legacy-plugin-chart-country-map` package published, or
  - publish it under another name yourself.
  -4. Update npm dependencies in `superset-frontend/package.json` to install the updated plugin package.
  +1. Generate a new GeoJSON file for your country following the guide in [this Jupyter notebook](https://github.com/apache/superset/blob/master/superset-frontend/plugins/legacy-plugin-chart-country-map/scripts/Country%20Map%20GeoJSON%20Generator.ipynb).
  +2. Edit the countries list in [legacy-plugin-chart-country-map/src/countries.ts](https://github.com/apache/superset/blob/master/superset-frontend/plugins/legacy-plugin-chart-country-map/src/countries.ts).
  +3. Install superset-frontend dependencies: `cd superset-frontend && npm install`
  +4. Verify your countries in Superset plugins storybook: `npm run plugins:storybook`.
  +5. Build and install Superset from source code.
  