[issue43738] Clarify public name of curses.window

Serhiy Storchaka added the comment: It could help also in help(). -- nosy: +serhiy.storchaka ___ Python tracker ___ ___ Python-bugs

[issue43738] Clarify public name of curses.window

New submission from Ryan McCampbell : Until 3.8 the curses window class was not directly available in code, but now it is available as `_curses.window`. This is not explicitly stated in the documentation (although it is consistent with how the method signatures are written). It is useful to h