Lint markdown files

Author: dcyriller

CONTRIBUTING.md

@@ -4,18 +4,18 @@ Thanks for contributing!
 
 ## Installation
 
-* `git clone [email protected]:dcyriller/ember-template-lint-plugin-prettier.git`
-* `cd ember-template-lint-plugin-prettier`
-* `yarn install`
+- `git clone [email protected]:dcyriller/ember-template-lint-plugin-prettier.git`
+- `cd ember-template-lint-plugin-prettier`
+- `yarn install`
 
 ## Linting
 
-* `yarn lint:js`
-* `yarn lint:md`
+- `yarn lint:js`
+- `yarn lint:md`
 
 ## Running tests
 
-* `yarn test` – Runs the test suite
+- `yarn test` – Runs the test suite
 
 This is an [ember-template-lint](https://github.com/ember-template-lint/ember-template-lint) plugin. Documentation for the APIs that it uses can be found [in that repo](https://github.com/ember-template-lint/ember-template-lint/blob/master/docs/plugins.md).