fix: coding style and file format for all example.

eBook/examples/chapter_6/minmax.go

@@ -1,20 +1,20 @@
-package main
-
-import "fmt"
-
-func main() {
-	var min, max int
-	min, max = MinMax(78, 65)
-	fmt.Printf("Minimum is: %d, Maximum is: %d\n", min, max)
-}
-
-func MinMax(a int, b int) (min int, max int) {
-	if a < b {
-		min = a
-		max = b
-	} else {		// a = b or a < b
-		min = b
-		max = a
-	}
-	return
-}
+package main
+
+import "fmt"
+
+func main() {
+	var min, max int
+	min, max = MinMax(78, 65)
+	fmt.Printf("Minimum is: %d, Maximum is: %d\n", min, max)
+}
+
+func MinMax(a int, b int) (min int, max int) {
+	if a < b {
+		min = a
+		max = b
+	} else { // a = b or a < b
+		min = b
+		max = a
+	}
+	return
+}