Fix datasources.delete_dqw REST API link

The link pointed at the delete_dqw_triggers anchor, which is not the
method this call makes. Point it at delete_dqws, Delete Data Quality
Warning by Content, and correct the link text.

Co-Authored-By: Claude Code <noreply@anthropic.com>

Author: jacalata

docs/api-ref.md

@@ -1966,7 +1966,7 @@ datasources.delete_dqw(datasource_item)
 
 Removes all data quality warnings from the specified data source.
 
-REST API: [Delete Quality Warning Triggers by Content](https://help.tableau.com/current/api/rest_api/en-us/REST/rest_api_ref_metadata.htm#delete_dqw_triggers)
+REST API: [Delete Data Quality Warning by Content](https://help.tableau.com/current/api/rest_api/en-us/REST/rest_api_ref_metadata.htm#delete_dqws)
 
 **Parameters**