Add sensuctl prune to sensuctl reference doc (#2305)
Add sensuctl prune to sensuctl reference doc (#2305)

* Add sensuctl prune to sensuctl reference doc

* Incorporate Nikki's comments

* Add clarifications based on Cyril's commit message

* Update content/sensu-go/5.19/sensuctl/reference.md

Co-Authored-By: Nikki Attea <e6c2ecc2e388fb04d0ff15d566d3dd54cecc8378@sensu.io>

* Apply suggestions from Nikki's March 25 code review

Co-authored-by: Nikki Attea <e6c2ecc2e388fb04d0ff15d566d3dd54cecc8378@sensu.io>
sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs