Update docs/man-openmpi/man1/mpirun.1.rst

Co-authored-by: Jeff Squyres <jsquyres@users.noreply.github.com>

Author: e-kwsm

docs/man-openmpi/man1/mpirun.1.rst

@@ -362,11 +362,11 @@ For rankfiles:
 To manage standard I/O:
 
 * ``--output-filename <filename>``: Redirect output from application processes
-  into `{filename}/{job}/rank.{rank}/std[out,err,diag]`, where `{rank}` is the
-  processes' rank in MPI_COMM_WORLD, left-filled with zero's for correct
-  ordering in listings. Any directories in the filename will automatically be
-  created. A relative path value will be converted to an absolute path based on
-  the cwd where mpirun is executed. Note that this will not work on
+  into ``{filename}/{job}/rank.{rank}/std[out,err,diag]``, where ``{rank}`` is the
+  processes' rank in ``MPI_COMM_WORLD``, left-filled with zero's for correct
+  ordering in file listings. Any intermediate directories in the resulting output files will automatically be
+  created. If ``filename`` is a relative path, it will be converted to an absolute path based on
+  the diretory where :ref:`mpirun(1) <man1-mpirun>` is executed. Note that this will not work in
   environments where the file system on compute nodes differs from that where
   :ref:`mpirun(1) <man1-mpirun>` is executed.