Fix parsing style attribute with trailing spaces

[sergeyfedotov]

Fixes #171

Since I'm not sure about the origin of the rule Add semi-colon to end to fix parsing issue, I simply added trimming of the trailing spaces.

[buro9]

This is a good catch, thanks... will merge 👍

Since it's not a security issue I usually leave these for a little before a new release is cut in case it accrues other small fixes. So if you want to reference this in your Go.mod you'll need the commit for now.