updated help msg

bootrap-bullseye.sh

@@ -38,7 +38,7 @@ then
   "$@"
 else
   # Show a helpful error
-  echo "Valid functions are prepare, install, bootloader, postinstall" >&2
+  echo "Valid functions are: grmlnetwork, prepare, install, bootloader, postinstall" >&2
   exit 1
 fi