zswap: implement a second chance algorithm for dynamic zswap shrinker (fix)

zswap: implement a second chance algorithm for dynamic zswap shrinker (fix)

Fix a small mistake in the referenced bit documentation.

Link: https://lkml.kernel.org/r/20240806003403.3142387-1-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Takero Funaki <flintglass@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>