Merge pull request astaxie#948 from zhilijiqi/patch-4

Update 05.6.md

Author: astaxie

zh/05.6.md

@@ -58,7 +58,7 @@ func newPool(server string) *redis.Pool {
 		TestOnBorrow: func(c redis.Conn, t time.Time) error {
 			_, err := c.Do("PING")
 			return err
-		},
+		}
 	}
 }