Update website/docs/reference/resource-properties/constraints.md

website/docs/reference/resource-properties/constraints.md

@@ -27,7 +27,7 @@ Foreign key constraints accept two additional inputs:
 - `to`: A relation input, likely `ref()`, indicating the referenced table.
 - `to_columns`: A list of column(s) in that table containing the corresponding primary or unique key.
 
-This syntax for defining foreign keys uses `ref`, meaning it will capture dependencies and works across different environments. It is available in [dbt Cloud Versionless](/docs/dbt-versions/upgrade-dbt-version-in-cloud#versionless), and versions of dbt Core starting with v1.9.
+This syntax for defining foreign keys uses `ref`, meaning it will capture dependencies and works across different environments. It's available in [dbt Cloud Versionless](/docs/dbt-versions/upgrade-dbt-version-in-cloud#versionless) and versions of dbt Core starting with v1.9.
 
 <VersionBlock firstVersion="1.9">
 <File name='models/schema.yml'>