update plugin example

Signed-off-by: Victor Vieux <victorvieux@gmail.com>

cleanup whitespace formatting

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

docs/extend/config.md

@@ -169,53 +169,50 @@ Config provides the base accessible fields for working with V0 plugin format
 
 *Example showing the 'tiborvass/no-remove' plugin config.*
 
-```
+```json
 {
-       	"description": "A test plugin for Docker",
-       	"documentation": "https://docs.docker.com/engine/extend/plugins/",
-       	"entrypoint": ["plugin-no-remove", "/data"],
-       	"interface" : {
-       		"types": ["docker.volumedriver/1.0"],
-       		"socket": "plugins.sock"
-       	},
-       	"network": {
-       		"type": "host"
-       	},
-
-       	"mounts": [
-       		{
-       			"source": "/data",
-       			"destination": "/data",
-       			"type": "bind",
-       			"options": ["shared", "rbind"]
-       		},
-       		{
-       			"destination": "/foobar",
-       			"type": "tmpfs"
-       		}
-       	],
-
-       	"args": {
-       		"name": "args",
-       		"description": "command line arguments",
-       		"value": []
-       	},
-
-       	"env": [
-       		{
-       			"name": "DEBUG",
-       			"description": "If set, prints debug messages",
-       			"value": "1"
-       		}
-       	],
-
-       	"devices": [
-       		{
-       			"name": "device",
-       			"description": "a host device to mount",
-       			"path": "/dev/cpu_dma_latency"
-       		}
-       	]
+  "description": "A test plugin for Docker",
+  "documentation": "https://docs.docker.com/engine/extend/plugins/",
+  "entrypoint": ["plugin-no-remove", "/data"],
+  "interface": {
+    "types": ["docker.volumedriver/1.0"],
+    "socket": "plugins.sock"
+  },
+  "network": {
+    "type": "host"
+  },
+  "mounts": [
+    {
+      "source": "/data",
+      "destination": "/data",
+      "type": "bind",
+      "options": ["shared", "rbind"]
+    },
+    {
+      "destination": "/foobar",
+      "type": "tmpfs"
+    }
+  ],
+  "args": {
+    "name": "args",
+    "description": "command line arguments",
+    "value": []
+  },
+  "env": [
+    {
+      "name": "DEBUG",
+      "description": "If set, prints debug messages",
+      "value": "1"
+    }
+  ],
+  "linux": {
+    "devices": [
+      {
+        "name": "device",
+        "description": "a host device to mount",
+        "path": "/dev/cpu_dma_latency"
+      }
+    ]
+  }
 }
-
 ```