Update pyEXP/BasisWrappers.cc

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: The9Cat

pyEXP/BasisWrappers.cc

@@ -1353,7 +1353,7 @@ void BasisFactoryClasses(py::module &m)
     .def("getCovarSamples", &BasisClasses::BiorthBasis::getCovarSamples,
          R"(
 	 Return a vector of counts and mass used to compute the partitioned 
-         vectors and covariance.  The rank of the vectors is set by 'sampT'
+         vectors and covariance.  The length of both returned vectors equals 'sampT'
 
          Parameters
          ----------