rst-directive-colons has type text instead of rst, unlike the other two rst hooks

I’m not if it might be intentional (I don’t see an indication of it), but the rst-directive-colons hook has types: [text] instead of rst like the other two reST hooks. Therefore, if unintentional, false positives might result, and it also doesn’t show up when rst is selected on the pre-commit hooks page (by the way, was that dropdown a relatively new addition or did I just miss it before? Its really nice to have, thanks, and its a further motivation for me to help upgrade older hooks to use types instead of files wherever practicable).

Happy to submit a PR to fix this if it isn’t intended, but I wanted to ask first. Thanks!

[asottile]

I think types: [rst] is probably best for now

[CAM-Gerlach]

Thanks, opened as PR #51