Update README.md

subjects/reversesecondhalf/README.md

@@ -26,10 +26,11 @@ import (
 )
 
 func main() {
-   ReverseSecondHalf("This is the 1st half This is the 2nd half")
+    fmt.Print(ReverseSecondHalf("This is the 1st half This is the 2nd half"))
-   ReverseSecondHalf("")
+    fmt.Print(ReverseSecondHalf(""))
-   ReverseSecondHalf("Hello World")
+    fmt.Print(ReverseSecondHalf("Hello World"))
 }
+
 ```
 
 And its output :