Wrong link outputed when running debusine archive suite create

Describe the bug

When running debusine archive suite create, the suite URL and workflow_template URL returns 404.

result: success
suite: https://debusine.debian.net/api/debian/developers-python-marisa-trie/collection/debian:suite/upload-to-unstable/
workflow_template: https://debusine.debian.net/api/debian/developers-python-marisa-trie/workflow-template/publish-to-upload-to-unstable/

Removing the /api part works.

How to reproduce the bug

$ debusine archive suite create \
  --workspace developers-python-marisa-trie \
  --architecture all --architecture amd64 --architecture arm64 \
  --base-workflow-template upload-to-unstable \
  upload-to-unstable

Runtime environment

debusine-client 0.14.1

Operating system

Debian unstable