Spotted by Shirayuki in
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Exif-iimcategory-lab/en
Change-Id: I27c2d9bdef4574f3007126ae288c28c0c2783247
'exif-iimcategory-evn' => 'Environment',
'exif-iimcategory-hth' => 'Health',
'exif-iimcategory-hum' => 'Human interest',
-'exif-iimcategory-lab' => 'Labour',
+'exif-iimcategory-lab' => 'Labor',
'exif-iimcategory-lif' => 'Lifestyle and leisure',
'exif-iimcategory-pol' => 'Politics',
'exif-iimcategory-rel' => 'Religion and belief',