mm: Kconfig: fix typo

Fixes a typo in the help section for ZSWAP.

Link: https://lkml.kernel.org/r/Message-ID:
Signed-off-by: Sophia Gabriella <sophia.gabriellla@outlook.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/Kconfig

@@ -33,7 +33,7 @@ config ZSWAP
 	  pages that are in the process of being swapped out and attempts to
 	  compress them into a dynamically allocated RAM-based memory pool.
 	  This can result in a significant I/O reduction on swap device and,
-	  in the case where decompressing from RAM is faster that swap device
+	  in the case where decompressing from RAM is faster than swap device
 	  reads, can also improve workload performance.
 
 	  This is marked experimental because it is a new feature (as of