Explain how to set the template variables

roles/matrix-mxisd/defaults/main.yml

@@ -44,6 +44,8 @@ matrix_mxisd_dns_overwrite_homeserver_client_name: "{{ matrix_server_fqn_matrix
 matrix_mxisd_dns_overwrite_homeserver_client_value: "http://matrix-synapse:8008"
 
 # Override the default email templates
+# To use this, fill in the template variables with the full desired template as a multi-line YAML variable
+#
 # More info:
 # https://github.com/kamax-matrix/mxisd/blob/master/docs/threepids/notification/template-generator.md
 # https://github.com/kamax-matrix/mxisd/tree/master/src/main/resources/threepids/email