Separate technique section for fediverse:creator

[trwnh]

#32 was resolved incorrectly by 47fd731 which provides incorrect information:

Per #32 (comment)

• fediverse:creator has nothing to do with the OpenGraph Protocol.
• property is not "non-standard"; it comes from RDFa.
• fediverse:creator uses <meta name=, not <meta property= (because it is not OGP and it is not RDFa -- the "false prefix" fediverse: does not expand to anything.)

solution

Change "OpenGraph Protocol" to "HTML <meta> element"

Rename and rework 4.3.2 https://swicg.github.io/activitypub-html-discovery/#opengraph-protocol to be about HTML meta tags, which can include OGP and Mastodon.

Fix property "non-standard" -> "RDFa"

Change the incorrect note about "non-standard" property to instead say that property comes from RDFa:

In this example, the article:author property is the author of the document. (Note that OpenGraph Protocol uses the non-standardRDFa property attribute for metadata.)

Fix fediverse:creator example

Incorrect:

<meta property="fediverse:creator" content="@person-22@ap.example" />

Correct:

<meta name="fediverse:creator" content="@person-22@ap.example" />

In this example, the fediverse:creator propertymetadata tag's content is the Webfinger IDacct: URI of the creator of the video, but prefixed with the @ symbol instead of with acct:. The Webfinger IDvalue of content can be transformed into an acct: URI and used with WebFinger to find the ActivityPub object corresponding to the creator.

[evanp]

I think a better idea would be to break fediverse:creator out to its own technique.