Markdown and HTML don't support mixing ordered and unordered items
within a single list. This means the previous syntax actually produced
three separate lists.
Also, markdown converters don't necesarrily respect the first number in
an ordered list, and may just overwrite it to one. This is the case for
the one that generates the systemd.io page. And even if that wasn't the
case, the numbering of the second ordered list would be off by one.
This commit fixes two instances of a miscount. As the number is not important in either case, and seemingly subject to changes, it was removed entirely.
Another sentence was reworded to improve readability.
The specified vendor UUID is not actually a UUID. This changes it to an actual UUID.
The new value matches the ones from the systemd-boot man page and [The Boot Loader Interface](https://systemd.io/BOOT_LOADER_INTERFACE/).
Adrian Wannenmacher