The description was already present,
but it used incorrect syntax, so it didn't show.
Change-Id: I7522265362f019c73523125df182366dfd274be2
'offset' => 'Offset of chunk in bytes',
'filesize' => 'Filesize of entire upload',
- 'async', 'Make potentially large file operations asynchronous when possible',
+ 'async' => 'Make potentially large file operations asynchronous when possible',
'asyncdownload' => 'Make fetching a URL asynchronous',
'leavemessage' => 'If asyncdownload is used, leave a message on the user talk page if finished',
'statuskey' => 'Fetch the upload status for this file key (upload by URL)',