Fixes PostgreSQL sequence manual resets (fix-up for d77e874)

See <https://www.postgresql.org/docs/current/datatype-oid.html>.

_posts/2025-01-01-how-to-migrate-magnetico-sqlite-database-dump-to-postgresql.md

@@ -181,7 +181,7 @@ BEFORE LOAD DO
 
 AFTER LOAD DO
     $$ UPDATE pg_index SET indisready=true WHERE indrelid = (SELECT oid FROM pg_class WHERE relname = '{{ TARGET_TABLE }}'); $$,
-    $$ SELECT setval("seq_{{ TARGET_TABLE }}_id", (SELECT MAX(id) FROM "{{ TARGET_TABLE }}")); $$;
+    $$ SELECT setval('seq_{{ TARGET_TABLE }}_id', (SELECT MAX(id) FROM "{{ TARGET_TABLE }}")); $$;
 {% endraw %}{% endhighlight %}
 
 It turns out PGLoader doesn't specify `CASCADE` when truncating target table, so we must do it ourselves as import prelude.