[CORD-2585]
Lint check documentation with markdownlint

Change-Id: Ifec3a636be862d53206477187c2868b1cb357c5b
diff --git a/docs/README.md b/docs/README.md
index f28a117..7e4c7c7 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -3,45 +3,50 @@
 The R-CORD (Residential CORD) profile is `Official`.
 
 ## Service Manifest
-R-CORD includes the following
-[service manifest](https://github.com/opencord/platform-install/blob/master/profile_manifests/rcord.yml):
 
-| Service              | Source Code         |
-|-------------|---------------|
-| vOLT                 | https://github.com/opencord/olt |
-| vSG                   | https://github.com/opencord/vsg |
-| vRouter             | https://github.com/opencord/vrouter |
-| vTR                   | https://github.com/opencord/vtr |
+R-CORD includes the following [service
+manifest](https://github.com/opencord/platform-install/blob/master/profile_manifests/rcord.yml):
+
+| Service        | Source Code         |
+|----------------|---------------|
+| vOLT           | https://github.com/opencord/olt |
+| vSG            | https://github.com/opencord/vsg |
+| vRouter        | https://github.com/opencord/vrouter |
+| vTR            | https://github.com/opencord/vtr |
 | ExampleService | https://github.com/opencord/exampleservice |
-| VTN                  | https://github.com/opencord/vtn |
-| Fabric               | https://github.com/opencord/fabric |
-| OpenStack        | https://github.com/opencord/openstack |
-| ONOS               | https://github.com/opencord/onos-service |
+| VTN            | https://github.com/opencord/vtn |
+| Fabric         | https://github.com/opencord/fabric |
+| OpenStack      | https://github.com/opencord/openstack |
+| ONOS           | https://github.com/opencord/onos-service |
 
 ## Model Extensions
+
 R-CORD extends CORD's core models with the following model specification
 ([rcord.xproto](https://github.com/opencord/rcord/blob/master/xos/rcord.xproto)),
 which represents the *subscriber* that anchors a chain of `ServiceInstances`:
 
 ```python
 message CordSubscriberRoot (ServiceInstance) {
-     option kind = "CordSubscriberRoot";
+    option kind = "CordSubscriberRoot";
 
-     required bool firewall_enable = 1 [default = False, null = False, db_index = False, blank = True];
-     optional string firewall_rules = 2 [default = "accept all anywhere anywhere", null = True, db_index = False, blank = True];
-     required bool url_filter_enable = 3 [default = False, null = False, db_index = False, blank = True];
-     optional string url_filter_rules = 4 [default = "allow all", null = True, db_index = False, blank = True];
-     required string url_filter_level = 5 [default = "PG", max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
-     required bool cdn_enable = 6 [default = False, null = False, db_index = False, blank = True];
-     required bool is_demo_user = 7 [default = False, null = False, db_index = False, blank = True];
-     required int32 uplink_speed = 8 [default = 1000000000, null = False, db_index = False, blank = False];
-     required int32 downlink_speed = 9 [default = 1000000000, null = False, db_index = False, blank = False];
-     required bool enable_uverse = 10 [default = True, null = False, db_index = False, blank = True];
-     required string status = 11 [default = "enabled", choices = "(('enabled', 'Enabled'), ('suspended', 'Suspended'), ('delinquent', 'Delinquent'), ('copyrightviolation', 'Copyright Violation'))", max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
-	 }
+    required bool firewall_enable = 1 [default = False, null = False, db_index = False, blank = True];
+    optional string firewall_rules = 2 [default = "accept all anywhere anywhere", null = True, db_index = False, blank = True];
+    required bool url_filter_enable = 3 [default = False, null = False, db_index = False, blank = True];
+    optional string url_filter_rules = 4 [default = "allow all", null = True, db_index = False, blank = True];
+    required string url_filter_level = 5 [default = "PG", max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
+    required bool cdn_enable = 6 [default = False, null = False, db_index = False, blank = True];
+    required bool is_demo_user = 7 [default = False, null = False, db_index = False, blank = True];
+    required int32 uplink_speed = 8 [default = 1000000000, null = False, db_index = False, blank = False];
+    required int32 downlink_speed = 9 [default = 1000000000, null = False, db_index = False, blank = False];
+    required bool enable_uverse = 10 [default = True, null = False, db_index = False, blank = True];
+    required string status = 11 [default = "enabled", choices = "(('enabled', 'Enabled'), ('suspended', 'Suspended'), ('delinquent', 'Delinquent'), ('copyrightviolation', 'Copyright Violation'))", max_length = 30, content_type = "stripped", blank = False, null = False, db_index = False];
+}
 ```
+
 ## GUI Extensions
+
 R-CORD includes the following GUI extensions:
 
 * [vtr](https://github.com/opencord/vtr/tree/master/xos/gui)
 * [rcord](https://github.com/opencord/rcord/tree/master/xos/gui)
+