Update docs/doc/30-reference/30-sql/30-query-operators/operators-subquery.md
@@ -6,7 +6,7 @@ description:
A subquery is a query nested within another one. Databend supports the following subquery types:
-- [Scalar Subqueries](#scalar-subqueries)
+- [Scalar Subquery](#scalar-subquery)
- [EXISTS / NOT EXISTS](#exists--not-exists)
## Scalar Subqueries
