Updated Reference

roles/matrix-grafana/defaults/main.yml

@@ -40,6 +40,8 @@ matrix_grafana_content_security_policy: true
 # specify content security policy template to customized template
 # added 'unsafe-inline' (ignored by browsers supporting nonces/hashes) to be backward compatible with older browsers.
 # added https: and http: url schemes (ignored by browsers supporting 'strict-dynamic') to be backward compatible with older browsers.
+# [Content Security Policy Browser Test] (https://content-security-policy.com/browser-test/)
+# [Content Security Policy Reference](https://content-security-policy.com/script-src/)
 matrix_grafana_content_security_policy_customized: true
 
 # A list of extra arguments to pass to the container