doc/radosgw: refine "notifications" and "events"

This commit refines the English in the "Notifications"
and "Events" sections of the notifications.rst page
(the "Bucket Notifications" page).

Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit b1e589343df4a113d773c4091705e74cd489a1e7)

Merge pull request #48571 from zdover23/wip-doc-2022-10-21-pacific-remove-deduplication

pacific: doc/dev: remove deduplication.rst from pacific

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/dev: remove deduplication.rst from pacific

This PR undoes the backporting of
https://github.com/ceph/ceph/pull/46089 to the Pacific
branch, which backporting was done in
https://github.com/ceph/ceph/pull/48568. Deduplication
does not exist in the pacific branch, so I shouldn't have
backported it.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #48568 from zdover23/wip-doc-2022-10-21-backport-46089-to-pacific

pacific: doc/dev: add explanation of how to use deduplication

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/dev: add explanation of how to use deduplication

Signed-off-by: Myoungwon Oh <myoungwon.oh@samsung.com>
(cherry picked from commit 72c695780c8361f81b8135899d9060811873dcb4)

Merge pull request #48243 from tserong/wip-57638-pacific

pacific: python-common: Add 'KB' to supported suffixes in SizeMatcher

Reviewed-by: Guillaume Abrioux <gabrioux@redhat.com>