litepaper-matrix improvements

[jackbacon-cosmos]

Page 2, left column, halfway down:
is the leverage multiplier for this LAs position because LAs receive gains or pay for losses from the covered colal-teral, cLA.
change colalteral to collateral.

General: references to She/Her should be They/Their

Page 4: right column, at the top:
cheapr should be cheaper.

Page 4: right column, in the footer:
incentivize people to contribute more to one people than another. (consider rewording)