docs: add swagger_ui_extra_configuration.persistAuthorization (#2140)

* Update configuration.md

Add persistAuthorization config option

* Update configuration.md

Author: caspla

core/configuration.md

@@ -567,6 +567,9 @@ return [
             // If set, enables filtering. The top bar will show an edit box that you can use to filter the tagged operations that are shown.
             'filter' => false,
 
+            // If set to true, it persists authorization data and it would not be lost on browser close/refresh
+            'persistAuthorization' => true,
+
             // You can use any other configuration parameters too.
         ],
     ],