Update README.md

Author: cloudyan

src/data-structures/linked-list/README.md

@@ -148,7 +148,7 @@ end ReverseTraversal
 
 | Access    | Search    | Insertion | Deletion  |
 | :-------: | :-------: | :-------: | :-------: |
-| O(n)      | O(n)      | O(1)      | O(1)      |
+| O(n)      | O(n)      | O(1)      | O(n)      |
 
 ### Space Complexity