478: book: update outdated required init signature r=korken89 a=tmplt

As per the title. The required signature of `#[init]` in the flowing text has not yet been updated for v0.6.0.

Co-authored-by: Viktor Sonesten <v@tmplt.dev>
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bors[bot] 2021-04-21 13:18:25 +00:00 committed by GitHub
commit 426662b198
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@ -23,9 +23,8 @@ to use the [`cortex_m_rt::entry`] attribute.
## `init` ## `init`
Within the `app` module the attribute expects to find an initialization Within the `app` module the attribute expects to find an initialization
function marked with the `init` attribute. This function must have signature function marked with the `init` attribute. This function must have
`fn(init::Context) [-> init::LateResources]` (the return type is not always signature `fn(init::Context) -> (init::LateResources, init::Monotonics)`.
required).
This initialization function will be the first part of the application to run. This initialization function will be the first part of the application to run.
The `init` function will run *with interrupts disabled* and has exclusive access The `init` function will run *with interrupts disabled* and has exclusive access