From the linked article ...
No.
"White rhinoceros is taken from the Afrikaans word describing its mouth: “wyd”, meaning “wide”. Early English settlers misinterpreted the “wyd” for “white”. It is also sometimes called the square-lipped rhinoceros."
https://rhinos.org/about-rhinos/rhino-species/white-rhino/
I learned this at school over 50 years ago - and some people say that schools never teach us anything useful.