ukify: fix backend/option applicability docs

The `SecureBootPrivateKey` and `SecureBootCertificate` options are used
by the `systemd-sbsign` backend, not just the `sbsign` backend.

diff --git a/man/ukify.xml b/man/ukify.xml
index ae820b33e16929929953f15a3a140c3948961a19..9262ae34b2433933d63c4e08c834f5e351da190c 100644 (file)
--- a/man/ukify.xml
+++ b/man/ukify.xml
@@ -530,7 +530,8 @@
           <varname>SigningEngine=</varname>/<option>--signing-engine=</option> or
           <varname>SigningProvider=</varname>/<option>--signing-provider=</option> option is used, this may
           also be an engine or provider specific designation. This option is required by
-          <varname>SecureBootSigningTool=sbsign</varname>/<option>--signtool=sbsign</option>. </para>
+          <varname>SecureBootSigningTool=sbsign</varname>/<option>--signtool=sbsign</option> and
+          <varname>SecureBootSigningTool=systemd-sbsign</varname>/<option>--signtool=systemd-sbsign</option>. </para>
 
           <xi:include href="version-info.xml" xpointer="v253"/></listitem>
         </varlistentry>
@@ -543,7 +544,8 @@
           <varname>SigningEngine=</varname>/<option>--signing-engine=</option> or
           <varname>SigningProvider=</varname>/<option>--signing-provider=</option> option is used, this may
           also be an engine or provider specific designation. This option is required by
-          <varname>SecureBootSigningTool=sbsign</varname>/<option>--signtool=sbsign</option>. </para>
+          <varname>SecureBootSigningTool=sbsign</varname>/<option>--signtool=sbsign</option> and
+          <varname>SecureBootSigningTool=systemd-sbsign</varname>/<option>--signtool=systemd-sbsign</option>. </para>
 
           <xi:include href="version-info.xml" xpointer="v253"/></listitem>
         </varlistentry>