Update MONSTER_SPECIAL_ATTACKS.md (#61081)

* Update MONSTER_SPECIAL_ATTACKS.md

Removed the obsolete burst_limit field from gun type special attacks
Further described how ammo_type from gun type special attacks works

Also:
Checked grammar and style
Checked links
Added links
Moved some things to their own sections
Added and edited some other descriptions

* Update MONSTER_SPECIAL_ATTACKS.md

* Update MONSTER_SPECIAL_ATTACKS.md