mm/slab_common: repair kernel-doc for __ksize()

Commit 445d41d7 ("Merge branch 'slab/for-6.1/kmalloc_size_roundup' into
slab/for-next") resolved a conflict of two concurrent changes to __ksize().

However, it did not adjust the kernel-doc comment of __ksize(), while the
name of the argument to __ksize() was renamed.

Hence, ./scripts/ kernel-doc -none mm/slab_common.c warns about it.

Adjust the kernel-doc comment for __ksize() for make W=1 happiness.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

mm/slab_common.c

@@ -1010,7 +1010,7 @@ EXPORT_SYMBOL(kfree);
 
 /**
  * __ksize -- Report full size of underlying allocation
- * @objp: pointer to the object
+ * @object: pointer to the object
  *
  * This should only be used internally to query the true size of allocations.
  * It is not meant to be a way to discover the usable size of an allocation
@@ -1018,7 +1018,7 @@ EXPORT_SYMBOL(kfree);
  * the originally requested allocation size may trigger KASAN, UBSAN_BOUNDS,
  * and/or FORTIFY_SOURCE.
  *
- * Return: size of the actual memory used by @objp in bytes
+ * Return: size of the actual memory used by @object in bytes
  */
 size_t __ksize(const void *object)
 {