set up instead of setup

[FakhriAz]

AppFlowy-Docs/documentation/software-contributions/conventions/git-conventions.md

Line 9 in b058a9f

We use [commitlint](https://github.com/wagoid/commitlint-github-action) to validate each commit message. It is automatically configured to validate your commit messages when you setup your AppFlowy repo.

Inaccurate: ....to validate your commit messages when you setup your AppFlowy repo.
Accurate: ....to validate your commit messages when you set up your AppFlowy repo.

Explanation: setup is a noun and set up is a verb. In this context it should be a verb.