fix formatting for docs

pybalance/lp/matcher.py

@@ -154,22 +154,18 @@ class ConstraintSatisfactionMatcher(object):
     options pool_size, target_size, and max_mismatch. The behavior of the solver is
     as given in the table below:
 
-    ------------------------------------------------------------------------------
     pool_size   target_size     max_mismatch    optimize
-    ------------------------------------------------------------------------------
     N           N               Y               pool_size subject to target_size = n_target
                                                     and balance constraints
     Y           Y               Y               balance subject to size and balance
                                                     constraints
     Y           Y               N               balance subject to size constraints
     N           N               N               balance subject to size constraints; default
                                                     to pool_size = target_size = n_target
-    ------------------------------------------------------------------------------
     Y           N               Y               not suported
     N           Y               Y               not suported
     Y           N               N               not suported
     N           Y               N               not suported
-    ------------------------------------------------------------------------------
 
     Optimizing pool_size subject to balance constraint is known as "cardinality
     matching". See https://kosukeimai.github.io/MatchIt/reference/method_cardinality.html