if .. generate highliting is breaks sometimes

[ivan-baldin]

if .. generate highlighting breaks when condition starts with a keyword. e.g. if port_id = 1 generate but not if 1 = port_id generate.

It also seems that generate's label is highlighted differently from other labels.

[mshr-h]

I'm not good at VHDL.
So I would appreciate it if you could look into that for me.
Related file is here.

• https://github.com/mshr-h/vscode-vhdl-support/blob/master/syntaxes/vhdl.tmLanguage