Rename `regex-shorthand` rule?

regex-shorthand do more than just shorthand now, should we rename it? also no-unsafe-regex is buggy and already off by default, and I looked around, didn’t found a better solution, maybe we can remove it, if we found a better way to do it, maybe we can add a option to regex-shorthand rule.

[sindresorhus]

Let’s go with better-regex.

[sindresorhus]

We don’t need to mention all of those though. We can link to it in the docs.

So in summary:

• Enforces shorthands readability
• Sorts character classes for consistency
• Makes regexes safer

So for description, maybe:

Improve regexes by making them shorter, consistent, and safer.

As for the error message, that really depends on the transformation being done though.