Update README.md

EndlessCheng · web-flow · commit 514b03d04855 · 2022-02-17T13:31:13.000+08:00
diff --git a/copypasta/template/interactive_problem/README.md b/copypasta/template/interactive_problem/README.md
@@ -1,6 +1,6 @@
 # Interactive Problem Template
 
-Use below interface and implement it both in `main.go` and `main_test.go`.
+You should implement this interface and use it both in `main.go` and `main_test.go`.
 
 ```go
 type interaction interface {
