stable/presentation-time: rephrase request intro

Attempting to clarify the paragraph. The key points are that feedback is
double-buffered, part of a commit as all double-buffered state is, and
it defines the term "content update" used later.

The new phrasing defines not only a content update, but also content
submission which is used further on in the spec. It implies the
double-buffered state semantics without actually using the term (it's
not really state to be applied), and makes a link with the very next
paragraph describing the prensentation time.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>

0 files changed, 0 insertions, 0 deletions