Fixed `positive` attribute in custom rtnt table

[schlunma]

Description

The positive attribute of in the rtnt table says "up", but it clearly needs to be "down".

Checklist

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• [x] 🛠 Unit tests have been added
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[codecov[bot]]

Codecov Report

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

Project coverage is 94.07%. Comparing base (5ae3240) to head (30cd09b).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2367 +/- ## ========================================== - Coverage 94.13% 94.07% -0.06% ========================================== Files 241 241 Lines 13414 13414 ========================================== - Hits 12627 12619 -8 - Misses 787 795 +8 ```

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