fix: coding style and file format for chapter 11, 12, 13, 14 and 15.

eBook/exercises/chapter_14/channel_buffer.go

@@ -1,21 +1,22 @@
-package main
-
-import "fmt"
-import "time"
-
-func main() {
-	c := make(chan int, 50)
-	go func() {
-		time.Sleep(15 * 1e9)
-		x := <-c
-		fmt.Println("received", x)
-	}()
-	fmt.Println("sending", 10)
-	c <- 10
-	fmt.Println("sent", 10)
-}
-/* Output:
-sending 10
-sent 10   // prints immediately
-no further output, because main() then stops
-*/
+package main
+
+import "fmt"
+import "time"
+
+func main() {
+	c := make(chan int, 50)
+	go func() {
+		time.Sleep(15 * 1e9)
+		x := <-c
+		fmt.Println("received", x)
+	}()
+	fmt.Println("sending", 10)
+	c <- 10
+	fmt.Println("sent", 10)
+}
+
+/* Output:
+sending 10
+sent 10   // prints immediately
+no further output, because main() then stops
+*/