[webauthn] [=present=] throws link error (#1397)

equalsJeffH has just created a new issue for https://github.com/w3c/webauthn:

== [=present=] throws link error ==
I can't find an appropriate link target for `[=present=]` ( i think there used to be one, whatever ), we oughta just `s/[=present=]/present/` and `s/[=present|not present=]/not present/` and `s/[=present|present=]/present/`.

Please view or discuss this issue at https://github.com/w3c/webauthn/issues/1397 using your GitHub account