Autolinking includes trailing exclamation marks
10.5.0: https://en.wikipedia.org/wiki/The_Informant!
-> https://en.wikipedia.org/wiki/The_Informant!
10.6.0: https://en.wikipedia.org/wiki/The_Informant!
-> https://en.wikipedia.org/wiki/The_Informant!
As noted in release-tools!315 (closed).
We should use all of https://github.com/vmg/rinku/blob/v2.0.1/ext/rinku/autolink.c#L65 as link enders, to preserve the previous behaviour.