docs: Update references to ns-edk2.yaml
Now that ns-edk2-dt.yaml and ns-edk2-acpi.yaml have been merged into a single ns-edk2.yaml config, let's update all the references in docs to match, so the user can still follow along.
While we are at it, update the stdout grabs for various commands in shrinkwrap to reflect what you currently get.
Signed-off-by: Ryan Roberts ryan.roberts@arm.com