Updated cheat sheat docs with an example after installation

[ArtSabintsev]

Summary

• Added test request/response at the end of installation allow the user to verify the installation worked

Issue

I needed to verify my installation worked, and the current guide did not work. I pulled the sample curl command from the full walkthrough.

• No issue number

Type of change

Select one or more from the following:

• New feature, functionality or library
• Consensus breaking; add the consensus-breaking label if so. See [Infra] Automatically add the consensus-breaking label #791 for details
• Bug fix
• Code health or cleanup
• Documentation
• Other (specify)

Testing

I will only do this once the language chanes I made are approved

• Documentation: make docusaurus_start; only needed if you make doc changes

Sanity Checklist

• I have tested my changes using the available tooling
• I have commented my code
• I have performed a self-review of my own code; both comments & source code
• I create and reference any new tickets, if applicable
• I have left TODOs throughout the codebase, if applicable

[Olshansk]

I pushed a few nits & edits in this commit: 62b88fc (#1004)

LGTM otherwise!