chore: update function documentation and fix typo
chore: update function documentation and fix typo

Signed-off-by: jonathansp <62b85599c124fc257b64cfd725bf9321f4666e72@gmail.com>

jetstack/cert-manager,cert-manager/cert-manager,jetstack/cert-manager,jetstack/cert-manager,cert-manager/cert-manager,cert-manager/cert-manager