Fix typo on image tag

templates/discourse-cern.yaml

@@ -108,7 +108,7 @@ objects:
           name: nginx
           command:
             - ./run-nginx.sh
-          image: gitlab-registry.cern.ch/webservices/discourse-cern:v2.3.0
+          image: gitlab-registry.cern.ch/webservices/discourse-cern:stable
           imagePullPolicy: IfNotPresent
           ports:
           - containerPort: 8080
@@ -150,7 +150,7 @@ objects:
             timeoutSeconds: 10
         -
           name: webapp
-          image: gitlab-registry.cern.ch/webservices/discourse-cern:v2.3.0
+          image: gitlab-registry.cern.ch/webservices/discourse-cern:stable
           imagePullPolicy: IfNotPresent
           ports:
           - containerPort: 3000
@@ -340,7 +340,7 @@ objects:
                   configMapKeyRef:
                     key: LANG
                     name: env-configmap
-            image: gitlab-registry.cern.ch/webservices/discourse-cern:v2.3.0
+            image: gitlab-registry.cern.ch/webservices/discourse-cern:stable
             imagePullPolicy: IfNotPresent
             resources:
               limits:
@@ -406,7 +406,7 @@ objects:
                   configMapKeyRef:
                     key: LANG
                     name: env-configmap
-            image: gitlab-registry.cern.ch/webservices/discourse-cern:v2.3.0
+            image: gitlab-registry.cern.ch/webservices/discourse-cern:stable
             imagePullPolicy: IfNotPresent
             resources:
               limits:
@@ -454,7 +454,7 @@ objects:
         - "nginx"
         from:
           kind: ImageStreamTag
-          name: discourse-cern:v2.3.0
+          name: discourse-cern:stable
           namespace: openshift
 
 - kind: PersistentVolumeClaim