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

Change-Id: Iba95a07bb1ed6230b9a900448bf294355a58285c
diff --git a/config-models/plproxy-1.x/files/yang/prom-label-proxy.yang b/config-models/plproxy-1.x/files/yang/prom-label-proxy.yang
index 294b5de..abc5c66 100755
--- a/config-models/plproxy-1.x/files/yang/prom-label-proxy.yang
+++ b/config-models/plproxy-1.x/files/yang/prom-label-proxy.yang
@@ -5,6 +5,7 @@
 module prom-label-proxy {

   namespace "http://opennetworking.org/promlabelproxy/config/";

   prefix plp;

+

   organization "Open Networking Foundation.";

   contact "Amit Wankhede";

   description "A Aether groups and prom label configuration";