useProvider docs (#2847)
* useProvider docs
* forgot to remove extraneous section
* adding margin and renaming component
* fixing some of the langauge
* updating useProvider example
* a little more complex example
* update copy a bit
* forgot to use spectrum var here
* ugh tabbing fixes and small adjustments to positioning
* Update docs
Co-authored-by: Devon Govett <devongovett@gmail.com>
