Use of function is wrong in the operation map definition

[domfarolino]

See https://wicg.github.io/shared-storage/#ref-for-function, which certainly links to the wrong dfn. You kinda can't just write [=function=] and hope it will go the right place, sadly. You can use https://dontcallmedom.github.io/webdex/ to help you narrow down the right place and linking syntax to nail down exact dfns though.