fix typo

README.rst

@@ -167,7 +167,7 @@ Requirements for particular toolchains and package sets
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 - ``foss*-serial`` should compile with the dependencies outlined above
-- ``foss*-mpi`` currently needs linux header files installed (to compile the ``kmem`` package)
+- ``foss*-mpi`` currently needs linux header files installed (to compile the ``knem`` package)
 - ``foss*-cuda-mpi`` (proably as `*-mpi, needs testing TODO)