Update media type for RAR archive.
Update media type for RAR archive.

Reference:
https://www.iana.org/assignments/media-types/application/vnd.rar

Signed-off-by: Masanori Ogino <c49462fef669560e618607913e6c283f7627123c@gmail.com>

cwyang/h2o,yannick/h2o,deweerdt/h2o,devnexen/h2o,yannick/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,deweerdt/h2o,h2o/h2o,devnexen/h2o,devnexen/h2o,yannick/h2o,h2o/h2o,deweerdt/h2o,h2o/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,devnexen/h2o,deweerdt/h2o,cwyang/h2o,yannick/h2o,deweerdt/h2o,cwyang/h2o,h2o/h2o,h2o/h2o,h2o/h2o,yannick/h2o,cwyang/h2o,devnexen/h2o,yannick/h2o,deweerdt/h2o,cwyang/h2o,deweerdt/h2o,devnexen/h2o,yannick/h2o,deweerdt/h2o,cwyang/h2o,deweerdt/h2o,cwyang/h2o