Update README.md

Author: Depth-monster

README.md

@@ -63,9 +63,11 @@ function lengthOfLongestSubstring(s: string): number {
 
 <details>
 <summary> <strong>4. Median of Two Sorted Arrays</strong> </summary>
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 Given two sorted arrays nums1 and nums2 of size m and n respectively, return the median of the two sorted arrays.
 
 The overall run time complexity should be O(log (m+n)).
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 ```typescript
 Example 1:
 Input: nums1 = [1,3], nums2 = [2]