Commit to fire tests on PR opening

Author: Marco Basile

Diff for: PROJECT_GUIDELINES.md

@@ -6,3 +6,4 @@ Contributions via pull requests are much appreciated. Before sending us a pull r
 - You used types in your TypeScript code so that we can leverage static analysis to maintain quality
 - You have interationalized any user-facing text or copy, by using our `i18n` solution ([as shown here](https://github.com/aws-samples/pcluster-manager/pull/175/commits/fdc6b77987c87a26f51dbc8da5d371d95ef80601)) so that we can translate to other languages in the future
 - You have followed the PR Quality Checklist available in our [Pull Request Template](.github/pull_request_template.md)
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