added _ as a replacement for kind name

[garethahealy]

with the latest release of regal, it adds a check for to make sure the package names matches the path.

• https://docs.styra.com/regal/rules/idiomatic/directory-package-mismatch

My paths have traditionally included a - and the package (which doesn't allow -) uses _. with this new check, I've made the paths match the packages but that then means the generated name for templates is invalid.

this PR adds _ to the replacement list for names

[garethahealy]

can see this new regal check would trigger your examples as well, i.e.: https://github.com/plexsystems/konstraint/blob/main/examples/container-deny-added-caps/src.rego#L22

[garethahealy]

@jalseth ; good to merge?

[jalseth]

LGTM, thanks!