Replace '-' with '_' in the initial template-cleanup.yml in 'build.sc'

[SinaKarvandi]

If the repository name contains a '-', the CI/CD will fail because in the 'build.sc', the name of the object cannot include a '-'. So, I replaced it with a '_'.

[sequencer]

how about wrapping it with “`”?

[SinaKarvandi]

how about wrapping it with “`”?

Yeah, you're right, that's a better option. I changed it to wrap it with '`' and test it on my local repo, it works.

[jackkoenig]

Ideally we'd only include these backticks if they are necessary, but this fixes a real problem so we should merge.