fdo#70998 Termchange: Graphics->Image

Change-Id: I73458ad8c4f6017bd9fdc36a40b67684d36adbad
Reviewed-on: https://gerrit.libreoffice.org/6483
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>