fix: coding style and file format for chapter 10.

eBook/exercises/chapter_10/magic.go

@@ -1,29 +1,30 @@
-// magic.go
-package main
-
-import "fmt"
-
-type Base struct{}
-
-func (Base) Magic() { fmt.Print("base magic ") }
-
-func (self Base) MoreMagic() {
-	self.Magic()
-	self.Magic()
-}
-
-type Voodoo struct {
-	Base
-}
-
-func (Voodoo) Magic() { fmt.Println("voodoo magic") }
-
-func main() {
-	v := new(Voodoo)
-	v.Magic()     
-	v.MoreMagic() 
-}
-/* Output:
-voodoo magic
-base magic base magic 
-*/
+// magic.go
+package main
+
+import "fmt"
+
+type Base struct{}
+
+func (Base) Magic() { fmt.Print("base magic ") }
+
+func (self Base) MoreMagic() {
+	self.Magic()
+	self.Magic()
+}
+
+type Voodoo struct {
+	Base
+}
+
+func (Voodoo) Magic() { fmt.Println("voodoo magic") }
+
+func main() {
+	v := new(Voodoo)
+	v.Magic()
+	v.MoreMagic()
+}
+
+/* Output:
+voodoo magic
+base magic base magic
+*/