Updated the 0036-Valid-Sudoku.md.

Author: debangi29

dsa-solutions/lc-solutions/0000-0099/0036-Valid-Sudoku.md

@@ -59,7 +59,6 @@ Only the filled cells need to be validated according to the mentioned rules.
 ,[".",".",".",".","8",".",".","7","9"]]
 ```
 **Output:**  false
-<br>
 
 **Explanation**: Same as Example 1, except with the 5 in the top left corner being modified to 8. Since there are two 8's in the top left $3 \times 3$ sub-box, it is invalid.