doc: adjust 9970443640b4569cf72b3c8e84abe80bdf533c7f for "null string"

Report by Andrew Dunstan

diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index 5a5d177ef84d0a9cf1aadad84afa826843e39a8a..b9c3eb4a732624da70229a85a9b4145431c2f5d5 100644 (file)
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -490,7 +490,7 @@ COPY <replaceable class="parameter">count</replaceable>
    <para>
     <literal>FORCE_NULL</> and <literal>FORCE_NOT_NULL</> can be used
     simultaneously on the same column. This results in converting quoted
-    empty strings to null values and unquoted empty strings to empty strings.
+    null strings to null values and unquoted null strings to empty strings.
    </para>
 
  </refsect1>