Post-Install: missing documentation about enabling TRIM

### Guide in question

Post-Install guide

### Link to page with the issue

"Universal" section I guess (or maybe "Miscellaneous")

### Clearly explain the issue

Enabling TRIM is important for SSD, even with APFS. Apple enables TRIM on their own SSDs with APFS.
The only page that talks about TRIM is https://dortania.github.io/Anti-Hackintosh-Buyers-Guide/Storage.html

### Possible fix

Add a section in the universal section of the Post-Install guide
Ideally this new page would:
- explain what is TRIM
- why it is important
- how to enable it (`sudo trimforce enable`)
- link to https://dortania.github.io/Anti-Hackintosh-Buyers-Guide/Storage.html
- link to https://github.com/dortania/bugtracker/issues/192
- explain [`SetApfsTrimTimeout`](https://dortania.github.io/docs/latest/Configuration.html#quirks-properties2) and provide a safe value for it like 1min (60000000 μs)