Username in summary for image replacements is CommonsDelinker instead of administrator's name

[Xuanyu Huang]

See contributions and config page. For this edit, summary is "Bot：以Namibian_national_anthem,_performed_by_the_United_States_Navy_Band.oga代替Namibia.ogg（CommonsDelinker的要求：File renamed: more descriptive filename.）"

[Steinsplitter]

Duplicate of #6.