docs - use external link for pxf xref
@@ -4,7 +4,7 @@ title: Greenplum Platform Extension Framework (PXF)
*Optional.* If you do not plan to use PXF, no action is necessary.
-If you plan to use PXF, refer to [Accessing External Data with PXF](../admin_guide/external/pxf-overview.html) for introductory PXF information. The [Installing PXF](../pxf/latest/release/installing_pxf.html) and [Configuring PXF](../pxf/latest/using/instcfg_pxf.html) topics in the PXF documentation provide installation and configuration instructions.
+If you plan to use PXF, refer to [Accessing External Data with PXF](../admin_guide/external/pxf-overview.html) for introductory PXF information. The [Installing PXF](https://greenplum.docs.pivotal.io/pxf/latest/release/installing_pxf.html) and [Configuring PXF](https://greenplum.docs.pivotal.io/pxf/latest/using/instcfg_pxf.html) topics in the PXF documentation provide installation and configuration instructions.
**Parent topic:**[Installing Optional Extensions \(Tanzu Greenplum\)](data_sci_pkgs.html)
