Messages: fix federatedincomplete typo + phrasing

Fix "ammend" => "amend"

The text for
views.aaf.base.identity.federatedsessions.federatedincomplete.details
was also referring to the missing attributes as being highlighted, but
they are just listed in the alert frame.  Thus changing the phrasing
accordingly.
Merge branch 'develop-fix-federatedincomplete-typos' into code-develop