Fix the incorrect format specifier used in commit
7a424ece48.
Author: Hou Zhijie
Discussion: https://postgr.es/m/
514f6f2f-6833-4539-39f1-
96cd1e011f23@enterprisedb.com
Discussion: https://postgr.es/m/OS0PR01MB5716CB015BAD807B29BC55BE944C2@OS0PR01MB5716.jpnprd01.prod.outlook.com