Fix a few more things

Signed-off-by: Michel Hollands <michel.hollands@gmail.com>

charts/meta-monitoring/templates/grafana/datasources.yaml

@@ -12,7 +12,7 @@ data:
 
     # List of data sources to delete from the database.
     deleteDatasources:
-      - name: Loki 
+      - name: Loki
         orgId: 1
 
     # List of data sources to insert/update depending on what's
@@ -32,7 +32,7 @@ data:
         uid: loki_ds
         # <string> Sets the data source's URL, including the
         # port.
-        url: http://loki-gateway.{{- $.Release.Namespace -}}.svc.cluster.local
+        url: http://{{- $.Release.Namespace -}}-loki-gateway.{{- $.Release.Namespace -}}.svc.cluster.local
         # <bool> Toggles whether the data source is pre-selected
         # for new panels. You can set only one default
         # data source per organization.