mm/codetag: fix a typo

Link: https://lkml.kernel.org/r/20240906042108.1150526-1-yuzhao@google.com


Fixes: 22d407b1 ("lib: add allocation tagging support for memory allocation profiling")
Signed-off-by: Yu Zhao <yuzhao@google.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Acked-by: Muchun Song <muchun.song@linux.dev>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>