change content format

Author: maciaszczykm

cloud-config.yaml

@@ -15,7 +15,8 @@ write_files:
 # TODO: Enable once it will be fixed.
 #  - path: /etc/plural-id
 #    permissions: "0644"
-#    content: {{ uuidv4 }}
+#    content: |
+#      {{ uuidv4 }}
 
 k3s:
   enabled: true