nix appends a semicolon when it generates nginx's configuration file. If the string has a trailing semicolon, then nginx complains about having a duplicated semicolon.

The manual builds and has the correct example when this patch is applied to release-19.09.
However, the manual appears broken on master, so it was not tested there.
(

manual-combined.xml:19885: element para: Relax-NG validity error : Did not expect element para there
 19881    </para></listitem>
 19882    <listitem><para>
 19883      <literal>"strong"</literal>: authentication by username/password. If user is not registered his access is denied regardless of ACLs.
 19884    </para></listitem>
 19885  </itemizedlist></para><para>Double authentication is possible, e.g.
 19886  <para>
 19887    {

)

There is still the problem that in the manual's options.html, the embedded $ shows up escaped: Example: "301 http://example.com\$request_uri;" , but it is correctly not escaped in the searchable options. I haven't yet looked into this.