markdownlint: minor fixes

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ibad43f93a4fb578c792a5dd69577617650ec01a9
diff --git a/docs/configuration.md b/docs/configuration.md
index 139f025..599f172 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -13,8 +13,16 @@
 
 The JSON format for get_device_id:
 
-    {"id": 0, "revision": 0, "addn_dev_support": 0,
-        "manuf_id": 0, "prod_id": 0, "aux": 0}
+```json
+{
+  "id": 0,
+  "revision": 0,
+  "addn_dev_support": 0,
+  "manuf_id": 0,
+  "prod_id": 0,
+  "aux": 0
+}
+```
 
 Each value in this JSON object should be an integer. The file is placed in
 /usr/share/ipmi-providers/ by Yocto, and will be parsed upon the first call to