Update impersonation.md

[ajlirap]

I found more spell error of the word Change

Description

Resolves #xxxx (write the related issue number if available)

TODO: Describe what this PR has changed, add screenshot or animated GIF if available, write if it is a breaking change, and how to fix the breaking changes for existing applications if so.

Checklist

• I fully tested it as developer / designer and created unit / integration tests
• I documented it (or no need to document or I will create a separate documentation issue)

How to test it?

Please describe how this can be tested by the test engineers if it is not already explicit - or remove this section if no need to description.

[maliming]

Thanks @ajlirap 👍