Describe the issue linked to the documentation

(cwjbrian50)

I am a good user of scikit-learn. First of all, I am grateful to
scikit-learn for providing a good service. The reason I write an email is
to report some typos.

While studying about AUC, I think I found some typos in API documentation.
As it is written in "
https://scikit-learn.org/stable/modules/model_evaluation.html#roc-metrics"
One-vs-one Algorithm, the multiclass macro AUC metric was defined in the
reference [HT2001]. But there is a double difference in macro ovo AUC
between the reference and documentation. Furthermore, under the macro AUC,
there is weighted AUC which is defined in the reference [FC2009] as it is
written in documentation. But there is no same metric in the documentation
in the reference however there is a similar one, AU1P. After reviewing the
code which includes the definition of roc_auc_score, I notice that it is
different from both of the expressions in the documentation and the
reference. Additionally, my scikit-learn version is 0.23.1. I hope this
part will be fixed well. Thank you for reading my email.

Suggest a potential alternative/fix

the best way to get this fixed is to send us a PR updating this file:
https://github.com/scikit-learn/scikit-learn/blob/master/doc/modules/model_evaluation.rst
thanks for your help