Mysteriously inconsistent broken URL -- us or them?

[cansavvy]

          > ⚠️ broken url errors ⚠️ There are broken url errors that need to be addressed. Click here ➡️ [for broken url errors!](https://github.com/fhdsl/Choosing_Genomics_Tools/blob/preview-52/check_reports/url_checks.tsv) ❗ Add errors that aren't errors to the [resources/ignore-urls.txt](https://github.com/fhdsl/Choosing_Genomics_Tools/edit/methylationLO/) file of this repo. If you are having troubles see [this guide](https://www.ottrproject.org/faqs.html#Most_Common_Errors) _Comment updated at 2024-05-06-19:48:07 with changes from [10d5baa](https://github.com/fhdsl/Choosing_Genomics_Tools/commit/10d5baa7ac2006280f78e392025c58c8b1baab95)_

I don't know why the URL checker is flagging this URL (https://www.biostarhandbook.com). I checked it and it's fine. I also haven't changed that file since I last went through the URL checker flagged URLs.

Originally posted by @kweav in #52 (comment)