Change saddle point references to row, column (exercism#1948)

Author: dcr8898

exercises/saddle-points/description.md

@@ -8,11 +8,11 @@ So say you have a matrix like so:
     1  2  3
   |---------
 1 | 9  8  7
-2 | 5  3  2     <--- saddle point at column 1, row 2, with value 5
+2 | 5  3  2     <--- saddle point at row 2, column 1, with value 5
 3 | 6  6  7
 ```
 
-It has a saddle point at column 1, row 2.
+It has a saddle point at row 2, column 1.
 
 It's called a "saddle point" because it is greater than or equal to
 every element in its row and less than or equal to every element in