2.2-2 fix

Replaced j with i in line 17. This is because according to the picture, the outer for loop has the iterator i and not j.
Thanks for maintaining such an awesome repo! :)

Author: aakashchoubey

C02-Getting-Started/2.2.md

@@ -14,7 +14,7 @@ Consider sorting n numbers stored in array A by first finding the smallest eleme
 ### `Answer`
 ![pic](./repo/s2/1.png)
 
-Loop invariant: at the start of each iteration of the outer for loop, the subarray A[1..j-1] consists of the j-1 smallest elements in the array A[1..n] and this subarray is in sorted order.
+Loop invariant: at the start of each iteration of the outer for loop, the subarray A[1..i-1] consists of the i-1 smallest elements in the array A[1..n] and this subarray is in sorted order.
 
 After the first n-1 elements, the subarray A[1..n-1] contains the smallest n-1 elements, sorted, and therefore element A[n] must be the largest element