improve atomic docs (#42024)
* improve atomic docs
* Update base/docs/basedocs.jl
Co-authored-by: Jameson Nash <vtjnash@gmail.com>
* Update base/docs/basedocs.jl
Co-authored-by: Jameson Nash <vtjnash@gmail.com>
Co-authored-by: Jameson Nash <vtjnash@gmail.com>