Add manigest->manifest and variations

"manigest" was found in
https://github.com/awslabs/aws-iam-aad/blob/31f6f36b0ca5b8a497cd91a17762360cb7876980/setup/initiate_setup.sh#L16
and
https://github.com/containers/Demos/blob/eb287284f7666c730d613f7b68b7bd356a71fc37/bootc/podman_helper.sh#L176

"manigests" was found in
https://github.com/NVIDIA/NeMo/blob/f56c56085402781dc66e032cebd55dc1904b36b9/tests/collections/speechlm/conf/salm_ci_config.yaml#L34

"manigesto" was found in
https://github.com/agilemanifesto/agilemanifesto.github.io/blob/master/display/000000286.html#L25

"manigesting" was found in
https://github.com/tmowreen97/idea-web-redesign/blob/54192b618c229333f17885edcafebcdb47b22ce2/components/Developments2.jsx#L420