Merge pull request #71 from iampi31415/updated-link

Fixed some small typosmistakes in the book.

Author: BartMassey

mdbook/src/02-requirements/README.md

@@ -56,6 +56,7 @@ least a HAL crate, like [`nrf52833-hal`] used here.  You may prefer a board with
 like [`microbit-v2`] used here.  If you intend to use a different microcontroller, you can look
 through [Awesome Embedded Rust] or just search the web to find supported crates.
 
+[`microbit-v2`]: https://docs.rs/microbit-v2
 [`nrf52833-hal`]: https://docs.rs/nrf52833-hal
 [Awesome Embedded Rust]: https://github.com/rust-embedded/awesome-embedded-rust
 

mdbook/src/03-setup/README.md

@@ -16,7 +16,7 @@ should work but we have listed the version we have tested.
 
 - Rust 1.79.0 or a newer toolchain.
 
-- `gdb-multiarch`. This is a debugging tool. The oldest tested version is10.2, but other versions
+- `gdb-multiarch`. This is a debugging tool. The oldest tested version is 10.2, but other versions
   will most likely work as well.  If your distribution/platform does not have `gdb-multiarch`
   available `arm-none-eabi-gdb` will do the trick as well. Furthermore, some normal `gdb` binaries
   are built with multiarch capabilities as well: you can find further information about this in the