Adds documentation for depth parameter
Adds documentation for depth parameter

Authored-by: Maryam Labib <9e044e5aaf391f018389e0d1c79d0a0ef3f69396@pivotal.io>
Co-authored-by: Soumya Gb <9fb32daa92cbffeef99d6d6467a37b6724f275fa@usc.edu>

Signed-off-by: Maryam Labib <9e044e5aaf391f018389e0d1c79d0a0ef3f69396@pivotal.io>
Signed-off-by: Soumya Gb <9fb32daa92cbffeef99d6d6467a37b6724f275fa@usc.edu>

concourse/pool-resource,concourse/pool-resource