VF - Inline javascript and CSS commenting uses <!-- --> erroneously

[gbutt]

Summary

When editing a visualforce page, when I comment out a line of javascript, I expect the language service to use the // for javascript, however it is using <!-- -->.

Steps To Reproduce:

1. Open a VF page
2. Add a script tag
3. Add some javascript
4. Use keyboard shortcut to comment out a line of javascript

Expected result

Javascript comments should use //.

Actual result

Javascript is commented out with <!-- -->.

Additional information

Feel free to attach a screenshot.

Extension version: 41.5.0

VS Code Version: 1.17.2

SFDX CLI Version: 6.0.9-3391781

OS and version: OSX 10.12.6

[vazexqi]

This is related to microsoft/vscode#11081 (which is fixed) I must have configured this wrongly when I converted the visualforce grammar.