src/pmdas/sample/help: fix typo
src/pmdas/sample/help: fix typo

looks like a "fat fingers meet vi" event ...

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp