Update endpoint of sample URL

[Emma-ms]

Purpose

The sample getDevice.json is moved to INT, and the PROD endpoint is no longer valid after AME migration.

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

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

How to Test

Import the updated model and the CC application works well.