Doc: Remove type information for import_generated in postgres-fdw.sgml.
The type information for FDW options is only added to HEAD; remove this
from back branches.  Oversight in commit
Apply the patch to v12, v13, and v14.
Discussion:
</listitem>
</varlistentry>
<varlistentry>
- <term><literal>import_generated</literal> (<type>boolean</type>)</term>
+ <term><literal>import_generated</literal></term>
<listitem>
<para>
This option controls whether column <literal>GENERATED</literal> expressions
