check-help-strings cleanup

This commit was SVN r32490.
(cherry picked from commit 03fbd9a12db5b88e9b13e3453194b1a847e9f4e6)
OSHMEM: sshmem mmap: removed unused help topics
(cherry picked from commit 5a63b96351d7fff93d231f7deaab2d1baf3a4632)
mtl mxm: fix typo in help topic name

Fixes typo introduced in 1a5ff6df43562de119c868bca29470823b1595ec
Merge pull request #77 from alex-mikheev/topic/oshmem_fix_help_strings

check-help-strings cleanup in oshmem