Diviner: Correct Javelin class and command in Concepts: Behaviors
Summary: Extracted from https://we.phorge.it/D25457. Issue found and fix written originally by @Sten.
Test Plan:
Unsuccessfully look for JavelinHelper in the Phorge codebase.
(You could still find it in https://github.com/phacility/javelin/blob/master/support/php/JavelinHelper.php though.)
And probably run `./bin/diviner generate` (I did not).
Reviewers: O1 Blessed Committers, mainframe98
Reviewed By: O1 Blessed Committers, mainframe98
Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno, Sten
Differential Revision: https://we.phorge.it/D26616