Hi,
if you are using workflow, you need to Approve and Publish document. Then it will be synchronized.
I've done both many times and eventually it shows up but it should show up right away.
Have you checked the output on a Preview or Live site? If the case is enabled, you cannot see changed immediately, if you have not set Cache minutes: 0 in properties of the repeater web part.
Best regards,
Ivana Tomanickova