make hasMultipleChangesToCitationcff condition parameterizable

[jspaaks]

Make the condition parameterizable like the other filters.

filtering/query.mjs

Lines 90 to 101 in c78334c

	const hasMultipleChangesToCitationcff = async (url) => {
	const [ owner, repo, ...unuseds ] = url.slice("https://github.com/".length).split('/');
	const commits = await octokit.rest.repos.listCommits({
	owner,
	repo,
	path: 'CITATION.cff'
	});
	return commits.data.length > 1
	}