man/machinectl: underscore is not allowed in machine name

Fixes #27481.

diff --git a/man/machinectl.xml b/man/machinectl.xml
index eab1a7d99e3f20cff0580567cd25523a03d33f15..13fa0eae7113e6bdeb6c5c8e5cd168a6bcc4d0e3 100644 (file)
--- a/man/machinectl.xml
+++ b/man/machinectl.xml
@@ -778,8 +778,7 @@
     non-empty label strings, separated by dots. No leading or trailing
     dots are allowed. No sequences of multiple dots are allowed. The
     label strings may only consist of alphanumeric characters as well
-    as the dash and underscore. The maximum length of a machine name
-    is 64 characters.</para>
+    as the dash. The maximum length of a machine name is 64 characters.</para>
 
     <para>A special machine with the name <literal>.host</literal>
     refers to the running host system itself. This is useful for execution