assignment2 task 2 modified

Assignment2.md

@@ -79,7 +79,7 @@ $ docker pull busybox
 $ docker images
 
 REPOSITORY 	TAG 		IMAGE ID 			CREATED 			VIRT
-busybox 		latest 	c51f86c28340 	4 weeks ago 	1.10
+busybox 	latest 	c51f86c28340 	4 weeks ago 	1.10
 ```
 
 #### c) 我们接下来继续尝试使用`docker run`命令来运行`busybox`
@@ -121,7 +121,7 @@ CONTAINER ID 	IMAGE 	COMMAND 	CREATED	 STATUS
 ```bash
 $ docker ps -a
 
-CONTAINER ID 			IMAGE 					COMMAND 			CREATED 					STATUS
+CONTAINER ID 			IMAGE 					COMMAND 			CREATED 				STATUS
 305297d7a235 			busybox 				"uptime" 			11 minutes ago 		Exited (
 ff0a5c3750b9 			busybox 				"sh" 				12 minutes ago 		Exited (
 14e5bd11d164 			hello-world 			"/hello" 			2 minutes ago 		Exited (