ch11: ch11-fledge-os-2 unexpected package.metadata.bootimage key default-target

[0xckruger]

It seems ch11's 3rd example has a configuration setting that is different from the other examples and causes it to not compile with:

Error: Failed to read bootimage configuration

Caused by:
    unexpected `package.metadata.bootimage` key `default-target` with value `"fledge.json"`

[package.metadata.bootimage]
default-target = "fledge.json"

Should be replaced by

[package.metadata.bootimage]
build-command = ["build"]

run-command = ["qemu-system-x86_64", "-drive", "format=raw,file={}"]

It should also be mentioned that #88 is relevant for all(?) the examples in this chapter; on the most recent version of Rust (1.79) this downgrade fix works (for me) without having to pin the nightly version.