IANA URLs should be https everywhere

[kesara]

Description

See #417

With #430 only addressed https://bib.ietf.org/public/rfc/bibxml?/* URLs.
There are other paths can get non https URLs from the UI.

See https://mailarchive.ietf.org/arch/msg/tools-discuss/SRSaoodGjsmvhLupMsNhbtQIBCY/

Code of Conduct

• I agree to follow the IETF's Code of Conduct

[ajeanmahoney]

This page says that the IANA ref info comes from their rsync server:
https://github.com/ietf-tools/bibxml-service/wiki/Data-sources

Maybe an issue needs to be opened with IANA to update in their source data?

[kesara]

Yes.
URLs from https://bib.ietf.org/public/rfc/bibxml*/ already do various modifications to comply with the RFC style guide.
But Download buttons from UI provides data from relaton sources directly.
As proposed in #445 should prevent any confusion with different variations.

[kesara]

Closing this as OBE.
#447 re-routes BibXML download button content to xml2rfc compatible URL.