English in comment

rpg/rule.py

@@ -98,7 +98,7 @@ class Rule:
             and (self.pos == other.pos)
 
     def contains(self, other):
-        """Test if another rule is contains in sub-rules **without
+        """Test if another rule is contained in sub-rules **without
         taking into account sub-rules nor `cleavage`** and return the
         sub-rule if founded.
 
@@ -115,7 +115,7 @@ class Rule:
         return ret
 
     def contains_any_level(self, other, ret=False):
-        """Test if another rule is contains within **without taking into
+        """Test if another rule is contained within **without taking into
         account sub-rules nor `cleavage`** no matter what level.
 
         :param other: rule to compare with