Validate that the origin section in the configuration matches the expected pattern, given the issue tracker type.

For example, if the issue tracker is GITHUB, the expected pattern is github.com/{namespace}/{project}.

Throw an execution error with a user-friendly message when that is not the case

	// makeExample replaces all ${linter} placeholders to a bound linter name.

The code below does not use ${linter} anywhere.
I could remove this, but would also like to avoid doing several unrelated things on the same PR, so keeping it as an issue to avoid forgetting about it.