dm vdo int-map: fix kerneldoc formatting

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202407141607.M3E2XQ0Z-lkp@intel.com/
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>

Author: lorelei-sakai

drivers/md/dm-vdo/int-map.c

@@ -96,7 +96,7 @@ struct int_map {
 	size_t size;
 	/** @capacity: The number of neighborhoods in the map. */
 	size_t capacity;
-	/* @bucket_count: The number of buckets in the bucket array. */
+	/** @bucket_count: The number of buckets in the bucket array. */
 	size_t bucket_count;
 	/** @buckets: The array of hash buckets. */
 	struct bucket *buckets;