Add 'id' to Acknowledgments section

Per note from Erik Rijkers
Discussion: https://postgr.es/m/3db724af16ee009ab7f812a6a1d9354e@xs4all.nl

diff --git a/doc/src/sgml/release-10.sgml b/doc/src/sgml/release-10.sgml
index a92bc380d8868596f214342819514ce581f97ff7..3784c49bff4bc7fc58c8d139120b7b0a0d3c8dbc 100644 (file)
--- a/doc/src/sgml/release-10.sgml
+++ b/doc/src/sgml/release-10.sgml
@@ -8990,7 +8990,7 @@ This was disabled in the PG 9.6 branch so there is no commit here.
 
   </sect2>
 
-  <sect2>
+  <sect2 id="release-10-acknowledgements">
    <title>Acknowledgments</title>
 
    <para>