doc:  PG 13 relnotes:  add documentation section and reformat
Add section about function table reformatting.
@@ -2331,7 +2331,7 @@ Use the directory of the pg_upgrade binary as the default new 'bindir' location
</sect3>
<sect3>
- <title>Source Code</title>
+ <title>Documentation</title>
<itemizedlist>
@@ -2347,6 +2347,27 @@ Add a glossary to the documentation (Corey Huinker, J&uuml;rgen Purtz, Roger Har
</listitem>
+<listitem>
+<!--
+Author: Tom Lane <tgl@sss.pgh.pa.us>
+2020-04-12 [e894c6183] Doc: introduce new layout for tables of functions and op
+-->
+
+<para>
+Reformat tables containing function information for better clarity (Tom Lane)
+</para>
+
+</listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Source Code</title>
+
+ <itemizedlist>
+
<listitem>
<!--
Author: Peter Eisentraut <peter@eisentraut.org>
