Drop match level on a Maps 'issue opened' needle
The font rendering on this URL bar seems to be slightly unstable
for some reason. We got a 95% match on this needle in
https://openqa.fedoraproject.org/tests/1846906#step/about/10
so let's just bump the level down a bit.
Signed-off-by: Adam Williamson <awilliam@redhat.com>