DOC: bug fix in pgprobackup

Author: Liudmila Mantrova

doc/src/sgml/pgprobackup.sgml

@@ -468,7 +468,7 @@ GRANT EXECUTE ON FUNCTION current_setting(text) TO backup;
 GRANT EXECUTE ON FUNCTION pg_is_in_recovery() TO backup;
 GRANT EXECUTE ON FUNCTION pg_start_backup(text, boolean, boolean) TO backup;
 GRANT EXECUTE ON FUNCTION pg_stop_backup() TO backup;
-GRANT EXECUTE ON FUNCTION pg_stop_backup(boolean) TO backup;
+GRANT EXECUTE ON FUNCTION pg_stop_backup(boolean, boolean) TO backup;
 GRANT EXECUTE ON FUNCTION pg_create_restore_point(text) TO backup;
 GRANT EXECUTE ON FUNCTION pg_switch_wal() TO backup;
 GRANT EXECUTE ON FUNCTION txid_current() TO backup;