documet trace-regex availability as >= 3.5

diff --git a/pdns/docs/pdns.xml b/pdns/docs/pdns.xml
index 305db71b74cbe850b5a1c72bb3e45b0cd68a4b3f..732f844d946b098db07a9808ae30efcb01205597 100644 (file)
--- a/pdns/docs/pdns.xml
+++ b/pdns/docs/pdns.xml
@@ -13301,6 +13301,7 @@ sql> insert into domainmetadata (domain_id, kind, content) values (7,'ALLOW-AXFR
                    <varlistentry>
              <term>trace-regex regex</term>
              <listitem>
+               <para>Available since 3.5.</para>
                <para>
                  Queries matching this regular expression will generate
                  voluminous tracing output. Be aware that matches from the