Remove a special Lava Orc line in the Beogh description

Almost all Lava Orcs are gone anyway since there were removed before
hitting stable.
Don't reduce Dispel Undead damage for non-hungry vampires

This wasn’t documented anywhere, was inconsistent with monster vampires,
and probably wouldn’t be impactful even if thoses issue were fixed.
Add some text for Gozag wrath

This should probably be reviewed, but is better than not having any text.

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