BibTeX Reference for “HTML 5.1 2nd Edition”

@TechReport{Danilo:21:HE,
  author      = "Alex Danilo and Arron Eicholz and Travis Leithead and Steve Faulkner",
  title       = "{HTML} 5.1 2nd Edition",
  month       = jan,
  note        = "https://www.w3.org/TR/2021/SPSD-html51-20210128/",
  year        = "2021",
  bibsource   = "https://w2.syronex.com/jmr/w3c-biblio",
  type        = "{WD} not longer in development",
  institution = "W3C",
}