@all-contributors Bot 🤖 Installation section incomplete

Describe the bug

When following the @all-contributors Bot 🤖 installation process, there are no instructions of what to add to the readme that will start adding the contributors profiles to the readme

To Reproduce Steps to reproduce the behavior:

1. follow the installation instructions
2. Comment on a PR with a contributor and their contributions

Expected behavior The bot makes a PR to the readme that includes adding the contributor

Actual behavior Bot makes an empty PR to update the readme example

It's unclear that you ned to use the cli in tandem with the bot to get this into the readme

<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
<!-- prettier-ignore-start -->
<!-- markdownlint-disable -->
<!-- markdownlint-restore -->
<!-- prettier-ignore-end -->

<!-- ALL-CONTRIBUTORS-LIST:END -->

And now I'm in a spot where it's telling me this. I tried uninstalling and reinstalling the bot and that didn't work : (

@all-contributors please add @<MathsionYang> for

@MathsionYang

I couldn't determine any contributions to add, did you specify any contributions? Please make sure to use valid contribution names.

@all-contributors please add @<MathsionYang> for doc,code

@MathsionYang

I couldn't determine any contributions to add, did you specify any contributions? Please make sure to use valid contribution names.

@all-contributors please add @MathsionYang for code

@MathsionYang

I've put up a pull request to add @MathsionYang! :tada:

@BrennerSpear hi please check the update guide. I think this solves this kind of confusion.

@Berkmann18 @gr2m I think we can close this issue

@tenshiAMD Yup.