fix help string for qnamaker

[vishwacsena]

No description provided.

[codecov-commenter]

Codecov Report

Merging #851 into master will decrease coverage by 0.77%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #851      +/-   ##
==========================================
- Coverage   57.91%   57.13%   -0.78%     
==========================================
  Files         213      213              
  Lines       15417    14913     -504     
  Branches     2078     2077       -1     
==========================================
- Hits         8928     8521     -407     
+ Misses       5930     5831      -99     
- Partials      559      561       +2     

Impacted Files	Coverage Δ
...ckages/qnamaker/src/commands/qnamaker/kb/export.ts	87.50% <ø> (-4.17%)	⬇️
...mathematics/confusion_matrix/AppConfusionMatrix.ts	6.66% <0.00%> (-22.32%)	⬇️
...kages/qnamaker/src/commands/qnamaker/kb/publish.ts	85.71% <0.00%> (-14.29%)	⬇️
...aker/src/commands/qnamaker/endpointkeys/refresh.ts	85.71% <0.00%> (-14.29%)	⬇️
...ages/lu/src/parser/qna/alterations/qnaConverter.js	40.00% <0.00%> (-10.00%)	⬇️
packages/lu/src/parser/lu/qnaOptions.js	12.50% <0.00%> (-9.73%)	⬇️
packages/qnamaker/src/utils/qnamakerbase.ts	71.64% <0.00%> (-8.72%)	⬇️
packages/qnamaker/src/commands/qnamaker/query.ts	41.93% <0.00%> (-8.07%)	⬇️
...kages/qnamaker/src/commands/qnamaker/kb/replace.ts	79.31% <0.00%> (-7.65%)	⬇️
... and 83 more

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