Update ID for Majority Element from 173 to 174

An existing quesiton already has the ID of 173 and this was causing some problems when attempting to update the difficulty counter, which landed in seanprashad#64

Author: Sean Prashad

src/data/index.js

@@ -2036,7 +2036,7 @@ const questions = [
  ],
  },
  {
- id: 173,
+ id: 174,
  name: 'Majority Element',
  url: 'https://leetcode.com/problems/majority-element/',
  pattern: ['Sorting'],