man: fix markup

<arg> is not allowed inside <title>.

diff --git a/man/systemd-hwdb.xml b/man/systemd-hwdb.xml
index ff3821bb2d2eb650829f3ab0b9c334eb3c1c83b7..3c6feb2a4a7c8585691f7041ce65aefe1a7be2a8 100644 (file)
--- a/man/systemd-hwdb.xml
+++ b/man/systemd-hwdb.xml
@@ -67,15 +67,15 @@
     </variablelist>
 
     <refsect2><title>systemd-hwdb
-      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <optional><replaceable>options</replaceable></optional>
       update</title>
       <para>Update the binary database.</para>
     </refsect2>
 
     <refsect2><title>systemd-hwdb
-      <arg choice="opt"><replaceable>options</replaceable></arg>
+      <optional><replaceable>options</replaceable></optional>
       query
-      <arg><replaceable>MODALIAS</replaceable></arg>
+      <replaceable>MODALIAS</replaceable>
     </title>
       <para>Query database and print result.</para>
     </refsect2>