Fixed some typos. Clarified some things, most importantly "Learning New Attacks"

I fixed some typos, and clarified a few things. Two things important enough to mention.

1: In Battle/Player's Turn, I added a reminder that no monster can do a healing attack and a double attack on the same turn.

2: In Earning And Learning New Attacks, I clarified that ANY two monster cards of the enemy and ANY two of yours being the same suit, allows you to learn any attack from that enemy--The two pairs of cards don't have to be in the same position. This should be a big help if anyone was confused by this.