Fix email notifier name parser. Fixes #6526

[sharkykh]

Fixes #6526

It seems like I made a mistake when I wrote the parser (#4450).
%AD uses spaces, not dashes:

Medusa/medusa/tv/episode.py

Lines 1542 to 1545 in 532abfa

	'%AD': str(self.airdate).replace('-', ' '),
	'%A.D': str(self.airdate).replace('-', '.'),
	'%A_D': us(str(self.airdate)),
	'%A-D': str(self.airdate),

# Before:
from medusa.notifiers.emailnotify import Notifier
Notifier._parse_name('Jeopardy! - 2019 04 15 - Returning Champion Vs. , show # 7971 - 720p HDTV')
# WARNING:medusa.notifiers.emailnotify:Unable to parse "Jeopardy! - 2019 04 15 - Returning Champion Vs. , show # 7971 - 720p HDTV" for email notification
{'show': 'Jeopardy!', 'episode': '2019 04 15 - Returning Champion Vs. , show # 7971 - 720p HDTV'}

# After:
from medusa.notifiers.emailnotify import Notifier
Notifier._parse_name('Jeopardy! - 2019 04 15 - Returning Champion Vs. , show # 7971 - 720p HDTV')
{'show': 'Jeopardy!', 'ep_id': '2019 04 15', 'episode': 'Returning Champion Vs. , show # 7971 - 720p HDTV'}