Update solutions/silver/usaco-923.mdx

Author: SansPapyrus683

solutions/silver/usaco-923.mdx

@@ -78,7 +78,7 @@ $200\times200$ matrix):
 ### Using Kadane's
 
 Now, we've reduced this problem to finding the max submatrix sum on a matrix,
-given that we can have two disjoint submatrices. Though it's a tall talk, let's
+given that we can have two disjoint submatrices. Though it's a tall task, let's
 try and tackle this bit by bit, first by considering if there's only _1_ matrix
 we can paint.