Pug syntax highlighting confuses element id with interpolation

[zachbryant]

It looks like the pug syntax highlighting is interpreting element ids as interpolation syntax. Adding brackets around the id achieves the right color.

A picture is worth a thousand words, so here is what I see:

while here is what I expect to see (removed id for this example):

VScode extension version: v0.40.9
pug: 3.0.2