[wp-docs] Codex pages directly linked from Help Tabs

[Safirul Alredha]

Posts (Menu or Panel?)
\_ Posts (SubPanel?)
\_ Add New
\_ Categories
...

I failed to find any NEW reference regarding this, whether it should
be Posts Menu or Posts Panel, Posts SubMenu or Posts SubPanel.

For example: in phpdoc or comment, WordPress uses Panel but for codex
link (under Help tab) it uses Menu.