Indeed! Your point is very taken, in fact!! Banda Singh Bahadur name has become so much popular that we tend to forget his real name. Taking a little initiative we have corrected this mistake on our part in the Logo as well.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-heritage/30378-commemorating-portrait-gurbaksh-singh-aka-banda.html

Thank you for showing up the right direction...

Gurfateh!