docs: clarify AUTOINSTALL is currently supported on Grml live systems only

It could be supported by any live system, but currently only Grml
provides it, so clarify that.

Thanks: Evgeni Golov <evgeni@grml.org> for review + improving

diff --git a/grml-debootstrap.8.txt b/grml-debootstrap.8.txt
index d42d827..329a7d3 100644 (file)
--- a/grml-debootstrap.8.txt
+++ b/grml-debootstrap.8.txt
@@ -296,9 +296,9 @@ If environment variable AUTOINSTALL is set grml-debootstrap can be executed in a
 full automatic mode. While this mode isn't really useful for interactive
 execution (just configure /etc/debootstrap/configure or specify the relevant
 variables on the command line instead) it is meant for use via boot option
-debian2hd. The boot option debian2hd (more precise: the kernelname on bootprompt)
-supports the following boot options (they correspond with the command line options
-mentioned above):
+debian2hd on the Grml live system. The boot option debian2hd (more precise: the
+kernelname at the bootprompt) supports the following boot options (they
+correspond with the command line options mentioned above):
 
   target=...