doc: add bitcoin_config.h PACKAGE updates to release process
doc: add bitcoin_config.h PACKAGE updates to release process

and reorganise the section and add relative url links.

Follow-up to e47dc4f.


Former-commit-id: 380f63b7e4bffba725e2b2e221eb342780bbd9f6
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin