fix: coding style and file format for all example.

eBook/examples/chapter_12/readinput2.go

@@ -1,22 +1,22 @@
-// read input from the console:
-package main
-
-import (
-	"fmt"
-	"bufio"
-	"os"
-)
-
-var inputReader *bufio.Reader
-	var input string
-	var err error
-
-func main() {
-	inputReader = bufio.NewReader(os.Stdin)  // reader for input
-	fmt.Println("Please enter some input: ")
-	input, err = inputReader.ReadString('\n')
-
-	if err == nil {
-		fmt.Printf("The input was: %s\n", input)
-	}
-}
+// read input from the console:
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+)
+
+var inputReader *bufio.Reader
+var input string
+var err error
+
+func main() {
+	inputReader = bufio.NewReader(os.Stdin) // reader for input
+	fmt.Println("Please enter some input: ")
+	input, err = inputReader.ReadString('\n')
+
+	if err == nil {
+		fmt.Printf("The input was: %s\n", input)
+	}
+}