man: fix machine-id(5) man page reference

Spotted whilst debugging:
```
[763/2094] Generating man/machine-info.html with a custom command
Element cite in namespace '' encountered in para, but no template matches.
[765/2094] Generating man/machine-info.5 with a custom command
Element cite in namespace '' encountered in para, but no template matches.
```

Follow-up to 357376d0bb.
This commit is contained in:
Frantisek Sumsal 2021-12-17 20:59:10 +01:00 committed by Yu Watanabe
parent a00fd2a553
commit b5c946d3b8

View file

@ -136,7 +136,8 @@
<command>kernel-install</command> should use. The value must be a valid machine ID (32 hexadecimal
characters). This would generally be the original machine-id that was used when the boot loader
entries for this installation were first added. When not set, the current value of
<cite>machine-id(5)</cite> will be used.</para></listitem>
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>
will be used.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>