Update README.md

Author: riti2409

README.md

@@ -8,3 +8,5 @@
 - Note :- The two main approaches to DP problems are memoization(top-down approach) and tabulation (bottom-up approach)
 
 While I was watching the videos, I saw , many a times he mispelled bottom up as top down . So it might reflect in the notes as well . Please keep this in mind while revising 
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+If you have any resources , please add.