Added contributing page

Author: andersonresende

CONTRIBUTING.md

@@ -0,0 +1,5 @@
+# Contributing
+
+## Pull requests
+
+Read [this checklist](https://devchecklists.com/en/checklist/pull-requests-checklist) for a more detailed guide on best practices for opening pull requests.

README.md

@@ -302,7 +302,7 @@ make help
 
 If you wish to contribute to this project, please first discuss the change you wish to make via an [issue](https://github.com/vintasoftware/nextjs-fastapi-template/issues).
 
-Check our [contributing guide](https://github.com/vintasoftware/nextjs-fastapi-template/issues/blob/main/CONTRIBUTING.md) to learn more about our development process and how you can test your changes to the boilerplate.
+Check our [contributing guide](https://github.com/vintasoftware/nextjs-fastapi-template/blob/main/CONTRIBUTING.md) to learn more about our development process and how you can test your changes to the boilerplate.
 
 ## Commercial Support