Updated Label guide (#1785)
Updated Label guide (#1785)

* Wip

* WIP

* Updated the second half

* Fixed backticks

* Removed backticks from labellers

* Fixed issues

* Fixed bulleted list

* Fixed mistakes

* Added reference links

* remove ds store file

* Rewrote tbd

* Incorporated suggestions

* incorporating suggestion

* Removed extra dollar signs

* incorporated suggestions

Co-authored-by: Oriol (ZBook) <af72bf69da82104e3d3d691a18658247d02fe853@gmail.com>
arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz,arviz-devs/arviz