Remove trailing backslashes from question titles

[ArcticEcho]

Today we had a report where the question's title ended with a backslash (\), this caused the link markdown to be escaped and thus broke the link:

[ FireAlarm-Swift ] [tag:php] Potentially bad question [Undefined index: files in C:](//stackoverflow.com/q/49947530)

The question's title:

Undefined index: files in C:\

Sadly it seems you can't escape backslashes in chat, so they will have to be removed.

[double-fault]

Should be fixed. I couldn't find a post with a trailing backslash and the report specified has been deleted. At least the change doesn't wreck reports without a backslash. Thanks for reporting this!