docs(fromto): extra fix in indentation and white-spaces

subjects/fromto/README.md

@@ -37,16 +37,17 @@ Here is a possible program to test your function:
 package main
 
 import (
-        "fmt"
+	"fmt"
-        "piscine"
+	"piscine"
 )
 
 func main() {
-        fmt.Print(piscine.FromTo(1, 10))
+	fmt.Print(piscine.FromTo(1, 10))
-        fmt.Print(piscine.FromTo(10, 1))
+	fmt.Print(piscine.FromTo(10, 1))
-        fmt.Print(piscine.FromTo(10, 10))
+	fmt.Print(piscine.FromTo(10, 10))
-        fmt.Print(piscine.FromTo(100, 10))
+	fmt.Print(piscine.FromTo(100, 10))
 }
+
 ```
 And its output: