Add leeway parameters to JWT auth doc (#6947)
Add leeway parameters to JWT auth doc (#6947)

* Add leeway parameters to JWT auth doc

* Clarify leeway doc

* Apply suggestions from code review

Co-Authored-By: Jim Kalafut <1cd02e31b43620d7c664e038ca42a060d61727b9@kalafut.net>

* Add note about only being applicable to JWT

* Update for negative values

kingland/vault,rnaveiras/vault,hashicorp/vault,joelthompson/vault,quixoten/vault,joelthompson/vault,hashicorp/vault,hartsock/vault,quixoten/vault,rnaveiras/vault,quixoten/vault,rnaveiras/vault,kingland/vault,hartsock/vault,kingland/vault,hashicorp/vault,kingland/vault,hartsock/vault,rnaveiras/vault,joelthompson/vault,hartsock/vault,hashicorp/vault,hashicorp/vault,kingland/vault,quixoten/vault,joelthompson/vault,hartsock/vault,hashicorp/vault,rnaveiras/vault