Out-of-date documentation regarding "cortex-m" and "riscv" features

[dlaw]

It appears that the cortex-m and riscv features were removed from this crate, but the documentation still makes reference to them.

https://github.com/probe-rs/rtt-target/blob/a1bae7cb3f6b81834d8f0030546baeabe0331d13/rtt-target/src/lib.rs#L12

which is rendered into https://docs.rs/rtt-target/latest/rtt_target/#hardware-support

Cheers!

[bugadani]

Fixed in #49

[lure23]

It's still in the docs via crates.io though, since no further release.

I understand not wanting to release for a mere documentation change. But in a way, the Issue is not completed if the primary source (which crates.io is, at least for me..) still mentions non-existing features, leading to confusion?