Small fix for README [ci skip]
Small fix for README [ci skip]

xing/paperclip-storage-ftp,toao/paperclip-storage-ftp,mlankenau/paperclip-storage-ftp,xing/paperclip-storage-ftp,mlankenau/paperclip-storage-ftp,toao/paperclip-storage-ftp,1000ideas/paperclip-storage-ftp