[LUA]Fix typo in Beastmaster JobUtil Gauge

[hooksta4]

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• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

Corrects a type in jobUtils/Beastmaster.lua onUseAbilityGauge.
Wasn't allowing players to use Gauge due to typo.

Steps to test these changes

Spelled Gauge correctly.
Use gauge ability.
Verified no other instances of guage throughout repo.