feat: added regle to list of Validation libraries

[victorgarciaesgi]

General

• Pull request template structure not broken

Type

ℹ️ What types of changes does your code introduce?

• Fix
• Feature

Checklist

• Title as described
• Make sure you put things in the right category!
• Always add your items to the end of a list

Open Source

• Link description does not contain a link to an author / third-party resource
• The documentation (README) contains a description of the project, illustration of the project with a demo or screenshots and a CONTRIBUTING section
• The documentation is in English.
• The project is active and maintained.
• The project accepts contributions.
• Not a commercial product