Fix publik key string

[mariumof]

Description of changes:

Style and formatting:

I have run pre-commit install && pre-commit run --all-files to ensure that auto-formatting happens with every commit.

Issue number, if available

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[codecov-commenter]

Codecov Report

Merging #530 (593ab5a) into master (efa0041) will decrease coverage by 4.92%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #530      +/-   ##
==========================================
- Coverage   72.95%   68.02%   -4.93%     
==========================================
  Files         127      117      -10     
  Lines       10917    10591     -326     
==========================================
- Hits         7964     7205     -759     
- Misses       2953     3386     +433     

Impacted Files	Coverage Δ
smdebug/mxnet/__init__.py	0.00% <0.00%> (-100.00%)	:arrow_down:
smdebug/mxnet/singleton_utils.py	0.00% <0.00%> (-100.00%)	:arrow_down:
smdebug/mxnet/hook.py	0.00% <0.00%> (-83.34%)	:arrow_down:
smdebug/mxnet/collection.py	0.00% <0.00%> (-76.67%)	:arrow_down:
smdebug/rules/action/message_action.py	13.25% <0.00%> (-68.68%)	:arrow_down:
smdebug/rules/action/action.py	30.61% <0.00%> (-61.23%)	:arrow_down:
smdebug/tensorflow/reductions.py	0.00% <0.00%> (-47.06%)	:arrow_down:
...iler/analysis/utils/pytorch_dataloader_analysis.py	0.00% <0.00%> (-44.95%)	:arrow_down:
smdebug/rules/action/stop_training_action.py	12.50% <0.00%> (-42.19%)	:arrow_down:
smdebug/core/modes.py	55.00% <0.00%> (-30.00%)	:arrow_down:
... and 33 more

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[mariumof]

Better run the tests locally