Inconsistency: "blinky" instructions refer to different API than example

[DavidAntliff]

This sentence does not match the example "solution" and the HAL API in use:

✅ Initiate the Io peripheral, and create a `led` variable from GPIO connected to the LED, using the
[`into_push_pull_output` function][into-push-pull-output].

https://github.com/esp-rs/no_std-training/blob/main/book/src/03_2_blinky.md?plain=1#L30C1-L32C1

The esp-hal API requires that the led variable be created as an Output using the Output::new() function:

https://docs.rs/esp-hal/0.23.1/esp_hal/gpio/index.html

The similarly named esp32-hal crate has a function called into_push_pull_output() which might be where this inconsistency arose.

I think I've got this the right way around. Regardless of which API is meant to be used, the example solution and the docs don't match.