Fix path in readme

[felipmiguel]

Purpose

There is a small error in the path of authConfig.js: There is App/client/authConfig.js, but it should be App/client/src/authConfig.js

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change

[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

The update only changes the README.md

What to Check

Verify that the following are valid

• the path of authConfig.js is App/client/src/authConfig.js

Other Information

[salman90]

LGTM!