Update typos I saw that `typos` was a few versions out of date and figured it would be a good idea to update it. Upgrading to `1.38.1` adds the [July](https://github.com/crate-ci/typos/issues/1331), [August](https://github.com/crate-ci/typos/issues/1345), and [September](https://github.com/crate-ci/typos/issues/1370) dictionary updates. As part of this change, I also sorted the configuration file.
The codegen crate contains the code to convert from MIR into LLVM IR,
and then from LLVM IR into machine code. In general it contains code
that runs towards the end of the compilation process.
For more information about how codegen works, see the rustc dev guide.