Issue Description

There are a few confusing things regarding WP_Filesystem docs.

1. The code in the function WP_Filesystem uses a variable to instantiate a class, so the docs parser doesn't link the pages.

$method = "WP_Filesystem_$method";
$wp_filesystem = new $method( $args );

There is no link to the base class mentioned in the summary.
2. The return value is not really explained. Basically, the More Information section needs to say what happens using the defaults.
3. The More Information section needs to link to the API page so the full explanation can be found on how to use this function.
https://developer.wordpress.org/apis/handbook/filesystem/
4. The contributed code examples on this function and on WP_Filesystem_Base all call the function with defaults and no getting credentials, which is how it is explained on the API page.
5. The More Information section should mention the earliest available hook of admin_init like the API page does.

URL of the Page with the Issue

https://developer.wordpress.org/reference/functions/wp_filesystem/
and feedback on https://developer.wordpress.org/reference/classes/wp_filesystem_base/

Section of Page with the issue

missing More Information section

Why is this a problem?

A developer can't find the information needed to use the function.

Suggested Fix

Add a More Information section with links to the classes and the API page, with the details needed to use the function.