Update coin-change-2.cpp

Author: kamyu104

C++/coin-change-2.cpp

@@ -7,7 +7,7 @@ class Solution {
         vector<int> dp(amount + 1);
         dp[0] = 1;
         for (const auto& coin : coins) {
-            for(int i = coin; i <= amount; ++i) {
+            for (int i = coin; i <= amount; ++i) {
                 dp[i] += dp[i - coin];
             }
         }