Fix/remove indent in server result (issue 114)

[shira-ayal]

Describe your changes

remove indentation in server results

Issue ticket number and link (if applicable)

https://github.com/tadata-org/fastapi_mcp/issues/114

Screenshots of the feature / bugfix

Checklist before requesting a review

• [ ] Added relevant tests
• [x] Run ruff & mypy
• [x] All tests pass

[codecov[bot]]

Codecov Report

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

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