Doc suggests pre-commit hook should run with requirements.txt

[dycw]

The documentation suggests the pre-commit hook:

         - id: pip-compile
            name: pip-compile requirements.txt
            args: [requirements.txt]
            files: ^requirements\.(in|txt)$

however this is incorrect — it should be requirements.in which is passed in.

[atugushev]

@dycw thanks for noticing! This looks like a candidate for a "good first issue".

[dycw]

Hi @atugushev , I've opened a PR; please review at your convenience.