Minor day 1 bugfix patch

Version 18 patch notes (launch version was Version 17)

• Changing the overall volume to 0, saving, closing + reopening the game, and turning the volume back up now properly unmutes the volume.
• Slightly reworded a couple How to Play/Bonus Tips.
• Added Special Thanks section in credits, to Timopy for making the trailer and Ratttz for sharing some Wario's Woods knowledge with me during development.