doc: clarify that max_wal_size is "during" checkpoints

bmomjian · bmomjian · commit db864c3c3603 · 2020-09-01T17:00:10.000-04:00
Previous wording was "between". Reported-by: Pavel Luzanov Discussion: https://postgr.es/m/26906a54-d7cb-2f8e-eed7-e31660024694@postgrespro.ru Backpatch-through: 9.5
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
@@ -3219,7 +3219,7 @@ include_dir 'conf.d'
       </term>
       <listitem>
        <para>
-        Maximum size to let the WAL grow to between automatic WAL
+        Maximum size to let the WAL grow during automatic
         checkpoints. This is a soft limit; WAL size can exceed
         <varname>max_wal_size</varname> under special circumstances, such as
         heavy load, a failing <varname>archive_command</varname>, or a high
