Update #18: Heal reverted to old formula, spelling fixes

[Trojal 91]

Reverted Heal to use the old formula, based on base level + int, not MATK based.

Here are some representative values of before and after (level 10 heal on self, and on Orc Zombie):

level 17 / 1 int
unarmed:
95 hp => 173 hp
64 dmg => 123 dmg
rod:
122 hp => 202 hp
108 dmg => 166 dmg

level 17 / 70 int
unarmed:
619 hp => 949 hp
535 dmg => 783 dmg
rod:
680 hp => 980 hp
592 dmg => 826 dmg

level 99 / 112 int
unarmed:
1455 hp => 2379 hp
1227 dmg => 1920 dmg
rod:
1486 hp => 2407 hp
1270 dmg => 1966 dmg

Also included 44 typo/spelling/grammar fixes across 5 scripts, thanks to @njosefbeck

[njosefbeck 16]

Yay for old heal! Also, if anyone wants to help out with the typo/spelling/grammar fixes, PM me here or on Discord and I can give you instructions. It's really easy to do :D!

[Stephcake 25]

Old heal formula! Priests actually being useful! Yeeesss.