fixing errors (location, legend, uri)

[yodobrin]

Purpose

Few errors on the sample provided:

1. location of the input json files, as of now they are all under /SDK Sample/ and not under the API, therefore the notebook will not run.
2. the endpoint / endpoint_latest is used twice, in one location there is no need for the prefix 'https' and in another there is, i added a quick fix for this
3. there are 3 compatibility warning, which i corrected using 'legend_label' instead of 'label'
4. the result coming back from REST call, return attributes without the 's' like UpperMargin (not UpperMargins)

Does this introduce a breaking change?

[ ] Yes
[ x] No

## Pull Request Type
What kind of change does this Pull Request introduce?


[ x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

• Test the code
  clone the repo
  add apikey and endpoint in the notebooks.
  run each cell - no errors

What to Check

Other Information