add new documentation guidelines (#14115)

* add new documentation style-guides

* update CODEOWNERS as well

* try new team

* revert

* Update docs/DOCUMENTATION_GUIDELINES.md

Co-authored-by: Juan <[email protected]>

* Update docs/DOCUMENTATION_GUIDELINES.md

Co-authored-by: Juan <[email protected]>

* Apply suggestions from code review

Co-authored-by: Ben Greenberg <[email protected]>

* Apply suggestions from code review

Co-authored-by: Sam Johnson <[email protected]>
Co-authored-by: Ben Greenberg <[email protected]>

* Update docs/DOCUMENTATION_GUIDELINES.md

* Apply suggestions from code review

Co-authored-by: Liam Aharon <[email protected]>
Co-authored-by: Ben Greenberg <[email protected]>

* Apply suggestions from code review

Co-authored-by: Ben Greenberg <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>

* Apply suggestions from code review

Co-authored-by: Sacha Lansky <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>

* Further updates.

* note about rewrap.

* update ToC and more

* update ToC and more

* Update docs/DOCUMENTATION_GUIDELINES.md

Co-authored-by: Sebastian Kunert <[email protected]>

* storage

---------

Co-authored-by: Juan <[email protected]>
Co-authored-by: Ben Greenberg <[email protected]>
Co-authored-by: Sam Johnson <[email protected]>
Co-authored-by: Liam Aharon <[email protected]>
Co-authored-by: Sacha Lansky <[email protected]>
Co-authored-by: Sebastian Kunert <[email protected]>