Fix two spec descriptions in trailing_semicolon_spec.rb

The test cases were correct, but the description of them were wrong.
I suspect a copy-paste error somewhere along the way.

Change-Id: I0b67de76183df85c320ea886431d6048a4aa2cd3
Reviewed-on: http://gerrit.causes.com/41047
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>