small fix

Author: rustagir

source/fundamentals/builders.txt

@@ -94,9 +94,19 @@ Using Builders
 Available Builders
 ------------------
 
-- :ref:`Aggregates <aggregates-builders>` for building aggregation pipelines.
+- :ref:`Aggregates <aggregates-builders>` for building aggregation
+  pipelines.
+
+  - :ref:`kotlin-atlas-vector-search` for using the
+    ``Aggregates.vectorSearch()`` method to use the Atlas Vector
+    Search feature.
+
 - :ref:`Filters <filters-builders>` for building query filters.
+
 - :ref:`Indexes <indexes-builders>` for creating index keys.
-- :ref:`Projections <projections-builders>` for building projections. 
+
+- :ref:`Projections <projections-builders>` for building projections.
+
 - :ref:`Sorts <sorts-builders>` for building sort criteria.
+
 - :ref:`Updates <updates-builders>` for building updates.