editoast: fix spelling in comments in generate_routes rs

[SergeCroise]

• graph is therefore expanded ...

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.92%. Comparing base (b443b6a) to head (edb2441).

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Additional details and impacted files

@@            Coverage Diff             @@
##              dev   #10731      +/-   ##
==========================================
- Coverage   81.93%   81.92%   -0.01%     
==========================================
  Files        1078     1078              
  Lines      107544   107544              
  Branches      733      733              
==========================================
- Hits        88115    88109       -6     
- Misses      19390    19396       +6     
  Partials       39       39              

Flag	Coverage Δ
editoast	74.38% <ø> (-0.02%)	⬇️
front	89.41% <ø> (ø)
gateway	2.18% <ø> (ø)
osrdyne	3.28% <ø> (ø)
railjson_generator	87.50% <ø> (ø)
tests	88.14% <ø> (ø)

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[woshilapin]

We're now using DCO for commits. You can take a look in https://osrd.fr/fr/docs/guides/contribute/contribute-code/commit-conventions/#le-developer-certificate-of-origin-dco for setting this up.

As for the labeler issue, we might have an issue with contributors which are not part of the OpenRailAssociation. We have a PR trying to fix that.

[Khoyo]

I've just enabled the repo setting Require contributors to sign off on web-based commits. It should prompt for DCO for web based commits now ;) (this will probably only be useful for new PRs though)