[REQUEST] Document Table end_section

[willmcgugan]

Consider posting in https://github.com/willmcgugan/rich/discussions for feedback before raising a feature request.

Have you checked the issues for a similar suggestions?

How would you improve Rich?

Give as much detail as you can. Example code of how you would like it to work would help.

What problem does it solve for you?

What problem do you have that this feature would solve? I may be able to suggest an existing way of solving it.