Improve documentation

[ScottA38]

Hi

I have migrated to working on my personal laptop (Mac) and as such am using valet-php to run Magento 2 apps From successful install of [email protected] it seems that it is required to use valet-php over homebrew php, but it is not clear to me why, and it doesn't seem to be detailed really in the Valet docs

Please can it be updated in the docs what valet-php actually provides over/ in contrast to brew 'vanilla' php? This way when problems are encountered users of the repo can identify whether this problem can be isolated to valet-php or not