Some doc fixes for exceptions
Some doc fixes for exceptions

credativUK/vdirsyncer,hobarrera/vdirsyncer,tribut/vdirsyncer,untitaker/vdirsyncer,credativUK/vdirsyncer,tribut/vdirsyncer,hobarrera/vdirsyncer,untitaker/vdirsyncer,mathstuf/vdirsyncer,untitaker/vdirsyncer,mathstuf/vdirsyncer