"type": ["object", "array", "string", "integer", "null", "boolean"],
is the current validation type list of "config" values. We need to set "number" instead of "integer". But since we accept every value, lets just get rid of the type check entirely.
This was noticed by the RelatedArticles extension, which has:
"config": { "RelatedArticlesShowReadMore": false, "RelatedArticlesUseCirrusSearch": false, "RelatedArticlesOnlyUseCirrusSearch": false, "RelatedArticlesLoggingSamplingRate": 0.01 },