[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

knapsack/knapsack_memoization.py

@@ -18,6 +18,7 @@
 This problem is implemented here with MEMOIZATION method using the concept of
 Dynamic Programming
 """
+
 """
 for more information visit https://en.wikipedia.org/wiki/Memoization
 """