Docs of count_user_posts() and get_usernumposts filter - $post_type can be clarified

[tyxla]

As @dimadin suggested here: #33481 - $post_type can be better clarified to describe that either a single post type or an array of post types can be passed.

[tyxla]

Docs of count_user_posts() and get_usernumposts filter - improving $post_type to describe that either a single post type or an array of post types can be passed.

[DrewAPicture]

Thanks for the patch.

[DrewAPicture]

In 33716:

Docs: Better clarify that the $post_type parameter for the get_usernumposts filter and count_user_posts() can accept either a single post type or array of post types.

Props tyxla
See #33481. Fixes #33520.