JSON fail to parse HP should be reworded

[ericangelokim]

We have received customer feedback that the 'Fail' info lines can be confusing. This should be reworded to something friendlier to avoid the confusion.

Relevant line here: https://github.com/aws/sagemaker-containers/blob/8ba4085548d28c8651cbd28b3049af58b3057fbc/src/sagemaker_containers/_env.py#L214

[ChoiByungWook]

@ericaws,

Any suggestions on the new wording? Feel free to submit a PR as well.

[icywang86rui]

@ericaws
Any suggestions on the new wording? Also could you tell us what's confusing your customer?

[jesterhazy]

Closing due to lack of activity.