feat(edge_services): add routing documentation

[scaleway-bot]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.56%. Comparing base (cacfaf4) to head (c68fc62).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...espaces/edge_services/v1beta1/edge_services_cli.go	0.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5399      +/-   ##
==========================================
- Coverage   54.56%   54.56%   -0.01%     
==========================================
  Files         317      317              
  Lines       70504    70516      +12     
==========================================
  Hits        38474    38474              
- Misses      30559    30571      +12     
  Partials     1471     1471              

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