Minor text inconsistencies in includes/plugin.php

[Mckilem]

Inside /wp-admin/includes/plugin.php file, I believe there are some inconsistencies within inline comments. For example, for add_users_page() function, comments tell us (line 1283) the following:

"Add sub menu page to the Users/Profile main menu."

And that's OK.

But for add_theme_page(), the comment says:

"Add sub menu page to the themes main menu."

Which I find inconsistent. It should be Appearance, which is more clear on where submenu goes.

The biggest "problem" could be for Settings page (function add_options_page()) - on line 1220, it says:

"Add sub menu page to the options main menu."

In my view, it should say:

"Add sub menu page to the Settings main menu."

And this should be consistent for all administration menu functions, so these would match WordPress core admin menu titles.

[atomicjack]

Fixed comment inconsistencies on wp-admin functions.

[atomicjack]

This patch resolves multiple inconsistencies: incorrect capitalisation, and inconsistent naming of menu names.

[Mckilem]

Looks ok to me.

[SergeyBiryukov]

In 35373:

Docs: Use consistent naming and capitalization of menu names in add_submenu_page() wrappers.

Props atomicjack, Mckilem.
Fixes #34360.

[SergeyBiryukov]

In 35731:

Docs: Improve DocBlock formatting for add_menu_page() and add_submenu_page() wrappers.

See #34360.