Update contribution guide

README.md

@@ -158,10 +158,10 @@ If you want to add support for an additional linter, please open an issue to dis
 
 - Clone the repository and install its dependencies with `yarn install`.
 - Create a new class for the linter, e.g. `src/linters/my-linter.js`. Have a look at the other files in that directory to see what functions the class needs to implement.
-- Import your class in the `src/linters/index.js` file.
+- Import your class in the [`src/linters/index.js`](./src/linters/index.js) file.
 - Provide a sample project for the linter under `test/linters/projects/my-linter/`. It should be simple and contain a few linting errors which your tests will detect.
-- Provide the expected linting output for your sample project in a `test/linters/params/my-linter.js` file. Again, see the other test files in the directory for inspiration. You can run the tests with `yarn test`.
-- Update the [`action.yml`](./action.yml) file with the options the new linter provides.
+- Provide the expected linting output for your sample project in a `test/linters/params/my-linter.js` file. Import this file in [`test/linters/linters.test.js`](./test/linters/linters.test.js). You can run the tests with `yarn test`.
+- Update the [`action.yml`](./action.yml) file with the options provided by the new linter.
 - Mention your linter in the [`README.md`](./README.md) file.
 
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