Document that meltano.yml should not contain sensitive information
Merge Request Checklist
- Link to an issue
- Include the proposed fix or feature
- [-] Include and update tests for the modified code
- Include a documentation change
- [-] Add a CHANGELOG.md entry in the Unreleased section
Once your merge request is complete, please assign it a Meltano maintainer for review cycle. Once the review cycle finished, the reviewer shall approve the merge request so it can be merged by any Meltano maintainer.
Closes #1470 (closed)