man: link UKI spec from sd-stub

diff --git a/man/systemd-stub.xml b/man/systemd-stub.xml
index b211339076714e1a66377bbd787fabfa8215953d..a34b925c566b355d0460fd4f6f9f30992dfa06fa 100644 (file)
--- a/man/systemd-stub.xml
+++ b/man/systemd-stub.xml
@@ -119,6 +119,9 @@
     and <citerefentry><refentrytitle>systemd-creds</refentrytitle><manvolnum>1</manvolnum></citerefentry>
     will automatically use files present under these paths to unlock protected resources (encrypted storage
     or credentials) or bind encryption to booted kernels.</para>
+
+    <para>For further details about the UKI concept, see the <ulink
+    url="https://uapi-group.org/specifications/specs/unified_kernel_image/">UKI specification</ulink>.</para>
   </refsect1>
 
   <refsect1>