Refine tables

[rachael-phillips]

Hey @redallen did we update the tables? Can we talk about next steps on how to make the tables unified and not broken.

Should be:

[redallen]

From #106:
It'd be difficult to change the Core docs table to a more dynamic React table like the "CSS Variables" table or like the "AlertActionCloseButton" table, but it's possible.

For now, I've changed the React props tables to be like the "CSS Variables" tables. Come next site release we can talk about what other refinements we want.