[BUG FIX] API DELETE /api/teams/:teamId/groups?groupId=external-group-id

[hamelg]

Description

Fix incorrect API call parameter : It returned always 404.

Checklist

• [x] The patch has appropriate test coverage
• [x] The patch follows the style guidelines of this project
• [x] The patch has appropriate comments, particularly in hard-to-understand areas
• [x] The documentation was updated corresponding to the patch
• [x] I have performed a self-review of this patch

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.24%. Comparing base (7303ec2) to head (5f225b8). Report is 8 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #156 +/- ## ========================================== - Coverage 94.44% 94.24% -0.20% ========================================== Files 26 26 Lines 1711 1739 +28 ========================================== + Hits 1616 1639 +23 - Misses 95 100 +5 ```

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