man: link Delegate= documentation up with the markdown docs

diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml
index 08ae2d049ad79bf122f8efb7cd8ef56588dfb824..4e282dad3d39e4b734ed7a6ca83743ca952325a9 100644 (file)
--- a/man/systemd.resource-control.xml
+++ b/man/systemd.resource-control.xml
@@ -730,6 +730,9 @@
           specific to the unified hierarchy while others are specific to the legacy hierarchy. Also note that the
           kernel might support further controllers, which aren't covered here yet as delegation is either not supported
           at all for them or not defined cleanly.</para>
+
+          <para>For further details on the delegation model consult <ulink
+          url="https://systemd.io/CGROUP_DELEGATION">Control Group APIs and Delegation</ulink>.</para>
         </listitem>
       </varlistentry>