doc: Fix description WAL writer in glossary

The WAL writer is an auxiliary process, but its description in the
glossary did not match that.

This is inexact since d3014fff4cd4.

Author: Masahiro Ikeda
Discussion: https://postgr.es/m/d3a5a4278fd8d9e7a47c6aa4db9e9a39@oss.nttdata.com
Backpatch-through: 15

diff --git a/doc/src/sgml/glossary.sgml b/doc/src/sgml/glossary.sgml
index a81c17a8690cf8b85be4226c9e475d40043e0886..487af1fed8869a263d10271ef77950a05f37821e 100644 (file)
--- a/doc/src/sgml/glossary.sgml
+++ b/doc/src/sgml/glossary.sgml
@@ -2213,7 +2213,8 @@
    <glossterm>WAL writer (process)</glossterm>
    <glossdef>
     <para>
-     A process that writes <glossterm linkend="glossary-wal-record">WAL records</glossterm>
+     An <glossterm linkend="glossary-auxiliary-proc">auxiliary process</glossterm>
+     that writes <glossterm linkend="glossary-wal-record">WAL records</glossterm>
      from <glossterm linkend="glossary-shared-memory">shared memory</glossterm> to
      <glossterm linkend="glossary-wal-file">WAL files</glossterm>.
     </para>