I need to self-review this still.
Updates the "Locking and syncing" page to actually have content on
syncing — which was the original intent, the rest of this file was just
copied out of the "Projects" page when I split it into multiple pages.
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Co-authored-by: Ed Morley <501702+edmorley@users.noreply.github.com>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>