The GPC links, e.g., in the [CA GPC subsection](https://github.com/InteractiveAdvertisingBureau/Global-Privacy-Platform/blob/main/Sections/US-States/CA/GPP%20Extension%3A%20California%20Privacy%20Technical%20Specification.md#gpc-sub-section), are outdated. Instead of > https://globalprivacycontrol.github.io/gpc-spec/ they should be > https://w3c.github.io/gpc/
