fix a dict entry

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 41.49%. Comparing base (7706d7f) to head (3cc88e5). Report is 3179 commits behind head on devel.

Files with missing lines	Patch %	Lines
src/radical/pilot/raptor/master.py	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## devel #2932 +/- ## ======================================= Coverage 41.49% 41.49% ======================================= Files 95 95 Lines 10474 10474 ======================================= Hits 4346 4346 Misses 6128 6128 ```

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