docs - add gp_external_enable_filter_pushdown to external table parameters table.
<xref href="guc-list.xml#gp_external_enable_exec" type="section"
>gp_external_enable_exec</xref>
</p>
+ <p>
+ <xref href="guc-list.xml#gp_external_enable_filter_pushdown" type="section"
+ >gp_external_enable_filter_pushdown</xref>
+ </p>
<p>
<xref href="guc-list.xml#gp_external_max_segs" type="section"
>gp_external_max_segs</xref>
