Diviner: fix "Javascript" -> "JavaScript" and minor change

Test Plan:

• look at Diviner and say "Java..."
• Diviner will look at you saying "...Script"
• you land, satisfied

If Diviner says "...script" instead (lowercase "S"), abandon the ship.

Reviewers: O1 Blessed Committers, avivey

Reviewed By: O1 Blessed Committers, avivey

Subscribers: speck, tobiaswiese, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25075