README: Fix BibTeX tag.
README: Fix BibTeX tag.

xinfang/face-recognize,nmabhi/Webface,nmabhi/Webface,nhzandi/openface,cmusatyalab/openface,cmusatyalab/openface,Alexx-G/openface,Alexx-G/openface,nmabhi/Webface,francisleunggie/openface,nhzandi/openface,francisleunggie/openface,francisleunggie/openface,sumsuddinshojib/openface,xinfang/face-recognize,sumsuddinshojib/openface,Alexx-G/openface,cmusatyalab/openface,Alexx-G/openface,xinfang/face-recognize,nmabhi/Webface,sumsuddinshojib/openface,nhzandi/openface,sumsuddinshojib/openface