BlazeandCave's Advancement Pack Enhanced Discoveries

Changes

• Deleted "Fully Booked" advancement, duplicate of "Shelf Expression" from BACAP

Bugfixes

• Added missing "pale_oak_sapling" to "Artificial Forest" advancement
• Clarified the description of "Circus Act" to make the advancement more understandable.
• Improved checks in "Oh, My Broken Legs" (again).
• Fixed a bug where 0 mobs were required to complete criteria in "Professional Assassin".
• Fixed repetition in the description of "Air Battle".
• Changed the "item_name" component to "custom_name" for proper display of some trophy names.