Show credentials inside Credential where they need to be

[adamnovak]

Description

This updates the example RPCClient configuration section to have the User and Password fields in the right place.

Motivation and Context

This should fix #1446. In #1150 the User and Password fields of RPCClient were moved inside a field named Credential, but the documentation's example configuration still shows them at their old location.

How Has This Been Tested?

I made my configuration look like this and started Funnel v0.11.14 and the server came up instead of rejecting the configuration.

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have updated the documentation accordingly (link here).
• I have tested that this feature locally.
• I have added tests to cover my changes.
• All new and existing tests passed.
• Reviewer has tested this feature locally

I don't think the documentation is under test, right? Otherwise this would have been caught already.

I wrote this in the Github web editor, and I'm not set up with a real dev environment to run the test suite.

[matthewpeterkort]

Thanks for spotting this. I have pulled in your commit from this branch into #1450 which aims to address your other issues as well.