Fix stylelint warnings

silvi.addweb → made their first commit to this issue’s fork.

I've tested and raised MR.

Please ensure you do not use the 8.x-1.x in the fork and push work to the proper branch.

Development must be done against 2.x

Indranil Roy → made their first commit to this issue’s fork.

Hey @acbramley,
I have raised the MR changed the targeted branch 2.x. please review.

I don't really see the point in fixing 1 failure in stylelint. I'd rather see it all fixed at once.