improve docs

Author: zloirock

CONTRIBUTING.md

@@ -19,7 +19,7 @@ Contributions are always welcome. If you don't know how you can help, you can ch
 
 For updating `core-js-compat` data:
 
-- If you want to add new data for a browser, run in this browser `tests/compat/index.html` and you will see what `core-js` modules are required for this browser.
+- If you want to add new data for a browser, run in this browser [`tests/compat/index.html`](https://raw.githack.com/zloirock/core-js/master/tests/compat/index.html) and you will see what `core-js` modules are required for this browser.
 - If you want to add new data for NodeJS, run `npm run compat-node` with the installed required NodeJS version and you will see the results in the console. Use `npm run compat-node-json` if you want to get the result as JSON.
 - If you want to add new data for Deno, run `npm run compat-deno` with the installed required Deno version and you will see the results in the console. Use `npm run compat-deno-json` if you want to get the result as JSON.
 - If you want to add new data for Rhino, set the required Rhino version in `compat-rhino-prepare` NPM script in [`package.json`](./package.json), run `npm run compat-rhino` and you will see the results in the console.