Update 0400-0499.md

Author: UtkarshBirla28

dsa-problems/leetcode-problems/0400-0499.md

@@ -338,7 +338,7 @@ export const problems = [
     "problemName": "454. 4Sum II",
     "difficulty": "Medium",
     "leetCodeLink": "https://leetcode.com/problems/4sum-ii",
-    "solutionLink": "#"
+    "solutionLink": "/dsa-solutions/lc-solutions/0400-0499/4Sum-II"
   },
   {
     "problemName": "455. Assign Cookies",
@@ -619,4 +619,4 @@ export const problems = [
     collectionLink="https://leetcode.com/study-plan/programming-skills"
 />
 
-Now, you can see the list of problems in a table format. You can click on the problem link to view the problem on the LeetCode website. You can also click on the solution link to view the solution of the problem.
+Now, you can see the list of problems in a table format. You can click on the problem link to view the problem on the LeetCode website. You can also click on the solution link to view the solution of the problem.