fix: typo in First Steps doc

[IgnatovFedor]

In first program example function returns{"message": "Hello World"} instead of {"hello": "world"} (see https://fastapi.tiangolo.com/tutorial/first-steps/).

[codecov]

Codecov Report

Merging #511 into master will not change coverage.
The diff coverage is n/a.

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  Coverage     100%   100%           
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  Files         251    251           
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  Hits         5988   5988

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[alimcmaster1]

This isn’t a typo? It’s just a JSON example of the response body.

[IgnatovFedor]

This isn’t a typo? It’s just a JSON example of the response body.

@alimcmaster1 an example of simplest FastAPI server is shown in documentation and below is not some JSON example of the response body but expected response of this server.

[alimcmaster1]

Ahh yes you are correct - didn’t see the top of the example. This LGTM - @tiangolo

[tiangolo]

Oops! 😅 Thanks @IgnatovFedor ! 🎉 🍰 Good catch! 🕵️‍♂️ 🔍 🐛 📝

And thanks @alimcmaster1 for the review!