Refine wording in Saddle Points

exercises/saddle-points/instructions.md

@@ -5,7 +5,7 @@ Your task is to find the potential trees where you could build your tree house.
 The data company provides the data as grids that show the heights of the trees.
 The rows of the grid represent the east-west direction, and the columns represent the north-south direction.
 
-An acceptable tree will be the largest in its row, while being the smallest in its column.
+An acceptable tree will be the tallest in its row, while being the shortest in its column.
 
 A grid might not have any good trees at all.
 Or it might have one, or even several.

exercises/saddle-points/introduction.md

@@ -7,5 +7,5 @@ You need to analyze each grid on the map to find good trees for your tree house.
 
 A good tree is both:
 
-- taller than every tree to the east and west, so that you have the best possible view of the sunrises and sunsets.
-- shorter than every tree to the north and south, to minimize the amount of tree climbing.
+- at least as tall as all trees to the east and west, so that you have the best possible view of the sunrises and sunsets.
+- at most as tall as all tree to the north and south, to minimize the amount of tree climbing.