Document new Comparison Validators #2590
Description
In symfony/symfony#790 (one of the oldest symfony PRs!), couple new validators are added. We should document those in our constraint reference:
- EqualTo
- NotEqualTo
- LessThan
- LessThanOrEqualTo
- GreaterThan
- GreaterThanOrEqualTo
- IdenticalTo
- NotIdenticalTo