generate documentation from config.sample.php

admin_manual/configuration_server/config_sample_php_parameters.rst

@@ -909,6 +909,11 @@ connection. If none of these hosts are reachable, the administration panel
 will show a warning. Set to an empty list to not do any such checks (warning
 will still be shown).
 
+If no protocol is provided, both http and https will be tested.
+For example, 'http://www.nextcloud.com' and 'https://www.nextcloud.com'
+will be tested for 'www.nextcloud.com'
+If a protocol is provided, only this one will be tested.
+
 Defaults to the following domains:
 
  - www.nextcloud.com