fix typo (get_deafult) in sh.tangled.repo.branches json response #805

Thank you for your contribution! Can you please amend your commit following our contribution guidelines? Then I think we can merge it.

It should be something like

types: fix struct tag typo

{description}

Signed-off-by: Your Name <your.email@example.com>

oh ok done!!

this is a known issue but is a backwards incompatible change. ideally we would introduce a new field with the right spelling and then deprecate the old one after a few versions.

or support both names.