How to contribute to the Fluiddyn Howto book?

Clone this repo locally.
- Login on https://foss.heptapod.net (It can be done with your Github account.)
- Create a ssh key and add it here: https://foss.heptapod.net/-/user_settings/ssh_keys (see the related Gitlab documentation https://foss.heptapod.net/help/user/ssh)
- Clone the repo with
```
hg clone ssh://hg@foss.heptapod.net/fluiddyn/fluidhowto
```
Install PDM for example as explained in the documentation.
Build the doc locally with make build.
Modify the source files in the directory book. Check that it still compiles locally (make build).
Get developer rights on the repository (create a short issue)

Commit, push and create a merge request.

hg pull
hg up default
hg topic topic-name-explaining-what-you-changed
hg commit -m "A message explaining the changes"
hg push

Provide feedback