Update esp-hal-common crate overview to indicate it is deprecated

[ophilli]

https://crates.io/crates/esp-hal-common currently links to https://docs.rs/esp-hal-common/

It seems it should instead link to https://docs.esp-rs.org/esp-hal/

[jessebraham]

The esp-hal-common package as been retired and is no longer receiving updates. esp-hal is the new name of the package.

[ophilli]

Can you update https://crates.io/crates/esp-hal-common to indicate that it is deprecated? It is confusing that it was last updated 4 months ago but has an invalid link to docs.rs