v5.0.x: change mellanox platform file

Signed-off-by: Tomislav Janjusic <[email protected]>

Author: janjust

contrib/platform/mellanox/optimized

@@ -1,6 +1,6 @@
 enable_mca_no_build=coll-ml,btl-uct
 enable_debug_symbols=yes
-enable_orterun_prefix_by_default=yes
+enable_mpirun_prefix_by_default=yes
 with_devel_headers=yes
 enable_oshmem=yes
 enable_oshmem_fortran=yes