Fixed the API swagger definition
Fixed the API swagger definition

Fixed a few errors in the swagger definition, that were causing parsers
to reject out yaml.

Signed-off-by: Dan Horobeanu <de06b8d568359df57e57b444456da06d2313ae63@amazon.com>

firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker,firecracker-microvm/firecracker