doc: Fix incorrect reference to textout in plpgsql examples

This error has survived for 22 years, and has been introduced by
da63386.

Reported-by: Erwin Brandstetter
Discussion: https://postgr.es/m/CAGHENJ57wogGOvGXo5LgWYcqswxafLck8ELqHDR+zrkTPgs_OQ@mail.gmail.com
Backpatch-through: 9.5

diff --git a/doc/src/sgml/plpgsql.sgml b/doc/src/sgml/plpgsql.sgml
index 328c1f3a0729e395feb5dbfef85253e69df82007..2774c335c48790ceeccaa94a719f491c84167de1 100644 (file)
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -4727,7 +4727,7 @@ $$ LANGUAGE plpgsql;
      to the local variable <varname>curtime</varname>, the
      <application>PL/pgSQL</application> interpreter casts this
      string to the <type>timestamp</type> type by calling the
-     <function>text_out</function> and <function>timestamp_in</function>
+     <function>textout</function> and <function>timestamp_in</function>
      functions for the conversion.  So, the computed time stamp is updated
      on each execution as the programmer expects.  Even though this
      happens to work as expected, it's not terribly efficient, so