Fixed the Link for the discuss section of the Backspace String Compare question (seanprashad#127)

Author: gssakash

src/data/index.js

@@ -1935,7 +1935,7 @@ const questions = [
  {
  id: 152,
  name: 'Backspace String Compare',
- url: 'https://leetcode.com/problems/backspace-string-compare',
+ url: 'https://leetcode.com/problems/backspace-string-compare/',
  pattern: ['Two Pointers'],
  difficulty: 'Easy',
  premium: false,