Improve documentation.

README.md

@@ -387,7 +387,7 @@ Note: Make sure to update `CMAKE_MODULE_PATH` env variable (otheriwse, `find_pac
   PARPACK doesn't: each MPI processor must handle and solve a subpart of the eigen system (matrices) only (independently from the other processors).
   See examples for Fortran in folder `PARPACK/EXAMPLES/MPI`, and for C/C++ examples in `PARPACK/TESTS/MPI/icb_parpack_c.c` and `PARPACK/TESTS/MPI/icb_parpack_cpp.cpp`
 
-## Using MKL instead of BLAS / LAPACK
+## Using MKL (also known as Intel oneAPI or oneMKL) instead of BLAS / LAPACK
 
 How to use arpack-ng with Intel MKL: