Use space to separate multiple modes

conf/defaults.ini

@@ -289,7 +289,7 @@ templates_pattern = emails/*.html
 [log]
 # Either "console", "file", "syslog". Default is console and  file
 # Use space to separate multiple modes, e.g. "console file"
-mode = console, file
+mode = console file
 
 # Either "debug", "info", "warn", "error", "critical", default is "info"
 level = info