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 95206ebfc1d210faa1af301e193abe62df3f4f72..b139f76920b9177fb6252b9d2328ab72984298e6 100644 (file)
--- a/doc/src/sgml/plpgsql.sgml
+++ b/doc/src/sgml/plpgsql.sgml
@@ -4858,7 +4858,7 @@ $$ LANGUAGE plpgsql;
      to the local variable curtime, the
      PL/pgSQL interpreter casts this
      string to the timestamp type by calling the
-     text_out and timestamp_in
+     textout and timestamp_in
      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