Fix info_file logging handler example

Signed-off-by: Ivan Kanakarakis <[email protected]>

Author: c00kiemon5ter

example/proxy_conf.yaml.example

@@ -47,7 +47,7 @@ LOGGING:
       level: ERROR
       formatter: simple
     info_file:
-      class: logging.FileHandler
+      class: logging.handlers.RotatingFileHandler
       filename: satosa-info.log
       encoding: utf8
       maxBytes: 10485760 # 10MB