memblock: Fix doc for memblock_phys_free

memblock_phys_free() is the counterpart to memblock_phys_alloc.
Change memblock_alloc_xx() with memblock_phys_alloc_xx() to keep
consistency.
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20221216100304.688209-1-linmq006@gmail.comSigned-off-by: Mike Rapoport (IBM) <rppt@kernel.org>

mm/memblock.c

@@ -836,7 +836,7 @@ void __init_memblock memblock_free(void *ptr, size_t size)
  * @base: phys starting address of the  boot memory block
  * @size: size of the boot memory block in bytes
  *
- * Free boot memory block previously allocated by memblock_alloc_xx() API.
+ * Free boot memory block previously allocated by memblock_phys_alloc_xx() API.
  * The freeing memory will not be released to the buddy allocator.
  */
 int __init_memblock memblock_phys_free(phys_addr_t base, phys_addr_t size)