Fix a typo, and change to the up-to-date location for the applications list

"defaults.list" is no longer used. Relevant XDG standards:
http://standards.freedesktop.org/mime-apps-spec/latest/ar01s02.html

Signed-off-by: stevenhoneyman <stevenhoneyman@users.noreply.github.com>
Merge pull request #7 from stevenhoneyman/master

Fix a typo, and change to the up-to-date location for the mime app .list