Add “Who uses simple-git-hooks” to docs

[ai]

Big names are a good way to convince users in our hype-driven community. Here are a few names, which we can add to docs:

• Autoprefixer
• PostCSS
• Browserslist
• Nano ID
• full list

A few examples of the section in my projects:

• https://github.com/ai/size-limit/#who-uses-size-limit
• https://github.com/browserslist/browserslist#browserslist-

[toplenboren]

Thank you!