resolve bug on golang solution 121

Author: DannyRavi

solution/0100-0199/0121.Best Time to Buy and Sell Stock/README.md

@@ -116,12 +116,12 @@ public:
 
 ```go
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }
 ```
 

solution/0100-0199/0121.Best Time to Buy and Sell Stock/README_EN.md

@@ -114,12 +114,12 @@ public:
 
 ```go
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }
 ```
 

solution/0100-0199/0121.Best Time to Buy and Sell Stock/Solution.go

@@ -1,8 +1,8 @@
 func maxProfit(prices []int) (ans int) {
-	mi := prices[0]
+    mi, ans := prices[0] ,0
 	for _, v := range prices {
 		ans = max(ans, v-mi)
 		mi = min(mi, v)
 	}
-	return
+	return ans
 }