How should one report documentation errors?

What should one do if they think there is an error in the current documentation.
For example, If you execute
git grep setGenerator
in the current master branch you will get

llvm/docs/ORCv2.rst:    JD.setGenerator(DynamicLibrarySearchGenerator::Load("/path/to/lib"
llvm/docs/ORCv2.rst:    JD.setGenerator(
llvm/docs/tutorial/BuildingAJIT1.rst:      ES.getMainJITDylib().setGenerator(
llvm/docs/tutorial/BuildingAJIT2.rst:      ES.getMainJITDylib().setGenerator(

This indicates (to me) that setGenerator is in the current documentation, but not the current source code.