Correct spelling problems as identified by codespell.

Link: https://lkml.kernel.org/r/20230710052223.18254-1-rdunlap@infradead.org
Fixes: facb6011 ("HWPOISON: Add soft page offline support")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>