man: clarify that machined RootDirectory parameter is informational only

It's basically just a label, it is not used for any purpose

(cherry picked from commit e80394e19303add17091ec0ce44c34a94645e8cf)

diff --git a/man/org.freedesktop.machine1.xml b/man/org.freedesktop.machine1.xml
index 779232054662a0310398226a33d2b3093c26e46d..16118c52b7776ef2543cb56de93d1207aa5583e2 100644 (file)
--- a/man/org.freedesktop.machine1.xml
+++ b/man/org.freedesktop.machine1.xml
@@ -341,7 +341,8 @@ node /org/freedesktop/machine1 {
       be either <literal>container</literal> or <literal>vm</literal> indicating whether the machine to
       register is of the respective class. The leader PID should be the host PID of the init process of the
       container or the encapsulating process of the VM. If the root directory of the container is known and
-      available in the host's hierarchy, it should be passed. Otherwise, pass the empty string instead. Finally, the
+      available in the host's hierarchy, it should be passed (note that this is for informational purposes
+      only, and will not be used otherwise). Otherwise, pass the empty string instead. Finally, the
       scope properties are passed as array in the same way as to PID1's
       <function>StartTransientUnit()</function> method. Calling this method will internally register a transient scope
       unit for the calling client (utilizing the passed scope_properties) and move the leader PID into