added-yang-linter-and-resolved-all-error-produced-by it

Change-Id: Iba95a07bb1ed6230b9a900448bf294355a58285c
diff --git a/config-models/aether-3.x/files/yang/connectivity-service.yang b/config-models/aether-3.x/files/yang/connectivity-service.yang
index f3cc3fc..aa97da3 100755
--- a/config-models/aether-3.x/files/yang/connectivity-service.yang
+++ b/config-models/aether-3.x/files/yang/connectivity-service.yang
@@ -12,7 +12,7 @@
 
   organization "Open Networking Foundation.";
   contact "Scott Baker";
-  description 
+  description
     "An Aether Connectivity service is the linkage between the
      ROC and a core that provides connectivity.";
 
@@ -25,6 +25,7 @@
         type yg:yang-identifier {
             length 1..32;
         }
+    description "The typedef for connectivity-service-id";
   }
 
   container connectivity-service {
@@ -45,7 +46,7 @@
             length 1..80;
         }
         description "display name to use in GUI or CLI";
-      }     
+      }
 
       leaf description {
         type at:description;
@@ -70,7 +71,7 @@
       leaf core-5g-endpoint {
         type inet:uri;
         description "url of the 5g core";
-      }      
+      }
     }
-  } 
+  }
 }