Updating content for dynamic approach of change

Author: jagdish-15

exercises/practice/change/.approaches/dynamic-programming/content.md

@@ -61,6 +61,8 @@ It minimizes the number of coins needed by breaking down the problem into smalle
    - After processing all values up to `grandTotal`, the combination at `coinsUsed[grandTotal]` will represent the most efficient solution.
    - If no valid combination exists for `grandTotal`, an exception is thrown.
 
-The time complexity of this approach is **O(n * m)**, where `n` is the `grandTotal` and `m` is the number of available coin denominations. This is because we iterate over all coin denominations for each amount up to `grandTotal`.
+## Time and Space Complexity
+
+- The time complexity of this approach is **O(n * m)**, where `n` is the `grandTotal` and `m` is the number of available coin denominations. This is because we iterate over all coin denominations for each amount up to `grandTotal`.
 
-The space complexity is **O(n)** due to the list `coinsUsed`, which stores the most efficient coin combination for each total up to `grandTotal`.
+- The space complexity is **O(n)** due to the list `coinsUsed`, which stores the most efficient coin combination for each total up to `grandTotal`.