Add missing binding + remove invalid note
Add missing binding + remove invalid note

HOME and END are going back to the start/end of the same line, i.e. they
are different to the other bindings.

matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk