feat: add information about reducing notifications

Samuel Allanrequested to merge
samuel/managing-notifications into master

Description

This is to support members who feel they are receiving too many notifications.

Supporting information

Private-ref: https://tasks.opencraft.com/browse/BB-10448

Testing instructions

  • build the docs, navigate to the new page
  • verify everything renders correctly
  • click all the links and verify they are all correct
  • verify accuracy of the information

Merge request reports