Fixing example to match current syntax

[shane-hinzman]

Ran into an issue when hitting this endpoint with "dataSources" was causing failures and saying that the correct field was "data_sources". After switching fields, the app started working

[prmerger-automator]

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[ttorble]

@aahill

Can you review the proposed changes?

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[aahill]

Thanks for the PR, we'll get this merged shortly

[aahill]

#sign-off