DOCSP-18226 BACKPORT (#993)

Author: Dave

source/core/data-modeling-introduction.txt

@@ -116,7 +116,7 @@ When designing a data model, consider how applications will use your
 database. For instance, if your application only uses recently
 inserted documents, consider using :doc:`/core/capped-collections`. Or
 if your application needs are mainly read operations to a collection,
-adding indexes to support common queries can improve performance.
+adding :ref:`indexes <indexes>` to support common queries can improve performance.
 
 See :doc:`/core/data-model-operations` for more information on these
 and other operational considerations that affect data model designs.