Update 05.6.md

error fixed.

Author: qinhanlei

ebook/05.6.md

@@ -29,16 +29,16 @@ https://github.com/astaxie/goredis
 
 	func main() {
 		var client goredis.Client
+		// 设置端口为redis默认端口
+		client.Addr = "127.0.0.1:6379"
+		
 		//字符串操作
-		var client goredis.Client
 		client.Set("a", []byte("hello"))
 		val, _ := client.Get("a")
 		fmt.Println(string(val))
 		client.Del("a")
 
 		//list操作
-
-		var client goredis.Client
 		vals := []string{"a", "b", "c", "d", "e"}
 		for _, v := range vals {
 			client.Rpush("l", []byte(v))