Hi, I've found a small bug in org-html-export-to-html. Minimal document to reproduce: --- Foo [fn:1] * Footnotes [fn:1] doi:10.1186/s12864-016-2377-z --- When I export this document to HTML the DOI link gets converted into a broken hyperlink. It should be converted into https://doi.org/10.1186/s12864-016-2377-z as explained in https://www.doi.org/. Following the link from the org file with C-c C-o works fine, though. It'd be great if this could get fixed, as DOI links are incredibly helpful when dealing with bibliographic items. Thanks