Update main.yml

Signed-off-by: sakshiarora13 <sakshi_arora1@dell.com>

telemetry/roles/grafana_config/vars/main.yml

@@ -13,6 +13,5 @@
 # limitations under the License.
 ---
 
-
 grafana_k8s: grafana
-grafana_namespace: grafana
+grafana_namespace: grafana