85: Alternative-language code missing
You declared the metadata name lang-
, whose purpose is to point to versions of the current document in a different language, but did not provide a language code as defined in BCP 47. However, that is expected.
Solution
Provide a small-letter language code such as fr
for French or en-gb
for British English directly after the lang-
as in the following examples.
@ lang-fr: ->http://example.org/
@ lang-en-gb: ->/britisch/