Zendesk macro section update

Updating the Community Advocacy tools - Zendesk macros section with relevant info.

Followed the official Zendesk documentation to get the most of the info:

[1] - https://support.zendesk.com/hc/en-us/articles/115001236988

[2] https://support.zendesk.com/hc/en-us/articles/203690796-Using-macros-to-update-tickets