Normative references to discontinued specs in JSON-LD 1.1

[dontcallmedom-bot]

This pull request was automatically created by Strudy upon detecting errors in JSON-LD 1.1.

Please check that these errors were correctly detected, and that they have not already been reported in https://github.com/w3c/json-ld-syntax.

If everything is OK, you can merge this pull request which will report the issue below to the repo, and update the underlying report file with a link to the said issue.

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Repo: 'https://github.com/w3c/json-ld-syntax'
Tracked: N/A
Title: Normative references to discontinued specs in JSON-LD 1.1

While crawling JSON-LD 1.1, the following normative referenced were detected as pointing to discontinued specifications:

• RFC7231 has been obsoleted by rfc9110

_{This issue was detected and reported semi-automatically by Strudy based on data collected in webref.}