Fix link to Permissions Policy’s "Parse policy directive" algorithm

[eeeps]

This makes the link work (following what I did here:

client-hints-infrastructure/index.bs

Line 222 in 239670d

running [[permissions-policy#algo-should-request-be-allowed-to-use-feature]] given |request| and

), but I think the real fix is to get Permissions Policy to do something (add abstract-op?) to it's <dfn>s, e.g., here: https://github.com/w3c/webappsec-permissions-policy/blob/fa9e382b271a4f0694b0ed5810aad88e0eb48d09/index.bs#L794

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Preview | Diff

[yoavweiss]

@clelland - thoughts on turning the permission-policy dfn to abstract-op and/or exporting it?

[clelland]

Given that we need this in CH-infra, and I think that @jarryd999 may be working on some other integrations that would require parsing, exporting makes sense. And if we're going to do that, I should change all of the algorithms to abstract-op.

[eeeps]

Ok, changed all of the links in this PR to be links to abstract ops (which it currently can't find... and I'm not sure I did it correctly... I'll try to make a PR over in Permissions Policy and then check). Don't merge this until Permissions Policy is exporting as algorithms and we can verify that the links are working.

[arichiv]

The latter has already been fixed and the former two are about to be re-written by me as part of #108

You can re-open and rebase if you want (and I would accept), but I'll also be getting to this soon.