Update docker.md

v1.1/docs/getting-started-guides/docker.md

@@ -20,10 +20,10 @@ following configs are turned on in your linux kernel:
 
 ```shell
 CONFIG_RESOURCE_COUNTERS=y
-    CONFIG_MEMCG=y
-    CONFIG_MEMCG_SWAP=y
-    CONFIG_MEMCG_SWAP_ENABLED=y
-    CONFIG_MEMCG_KMEM=y
+CONFIG_MEMCG=y
+CONFIG_MEMCG_SWAP=y
+CONFIG_MEMCG_SWAP_ENABLED=y
+CONFIG_MEMCG_KMEM=y
 ```
 
 3. Enable the memory and swap accounting in the kernel, at boot, as command line
@@ -32,6 +32,7 @@ parameters as follows:
 ```shell
 GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1"
 ```
+
 NOTE: The above is specifically for GRUB2.
     You can check the command line parameters passed to your kernel by looking at the
     output of /proc/cmdline: