Developer documentation update

[spoutn1k]

Hey everyone,

I was looking into the insides of wi4mpi and decided to update the developer docs, as some sentences did not make sense. I also updated the references to renamed files and added a bunch of comments to the assembly code dump.

[adrien-cotte]

Amazing job 😳 👍 👏🎉👌🏆🐐

[spoutn1k]

No problemo 😎🤠📝🤯💪🙌

[marcjoos-cea]

Many thanks for taking the time to improve our documentation!

[spoutn1k]

You're welcome ! :)