fix(docs): replace all global.html -> admin.html (#1341)
fix(docs): replace all global.html -> admin.html (#1341)

Co-authored-by: Hiranya Jayathilaka <e41ff4c9a15d0fcb4b487c0b1cb1ef4ba611ced5@gmail.com>
firebase/firebase-admin-node,firebase/firebase-admin-node