Possibly because one of sirinsidiator's addon descriptions or changelogs contains images or texts linked to his website, and Minion is reading them from the website then.
As the link is the "translation helper website" I guess it is linked at his addon description so ppl can find and help translate his addon.
Edit: The graphic with the "already translated percentage" is in the addon descriptions, and thus Minion reads that link.
-> If you use any of his addons, like Awesome Guild Store for example, it maybe that case.
I'd see it as false positive as my scanners all say his websites are clean, and I really would wonder if not
