I regenerated the update-responses xml files for alpha and release after updating detailsURL in tools/update-responses/config.yml, so the problem should be fixed.
As it is quite late now I will post the patches for doing that tomorrow.
Looks good. The fix on master in tor-browser-build is commit ac2aeae99060dde267e89e68f6962047a89ddf80 and the one on maint-7.0 in tor-browser-bundle is commit 4082cf0318557c0a4d7d161c88e15ffd9118133c.
Trac: Resolution: N/Ato fixed Status: needs_review to closed