method calls should be highlightGroup just like property access

[izelnakri]

Currently the highlighted twhite text below is considered 'Normal' highlightGroup.

it needs better regex match to be considered a Keyword highlightGroup just like params.username:

https://www.evernote.com/l/AL5MctvlHYBAlJLENHGdEKzc7amLwvyFKm4