docs: Content Layer API Example small fix

[eduardocereto]

Description

It's a small error in an example of content-collections on page

https://docs.astro.build/en/reference/configuration-reference/

I'm fixing it here because after diving into the docs repo it seems the data comes canonically from these comments.

---
import { getEntry, render } from 'astro:content';

const post = await getEntry('blog', Astro.params.slug);

- const { Content, headings } = await render(entry);
+ const { Content, headings } = await render(post); 
---

<Content />

Changes

A single comment string change to fix an example that uses the wrong variable.

Testing

None. Only changes to doc strings

Docs

We're fixing docs here, no docs needed.

[changeset-bot]

🦋 Changeset detected

Latest commit: 52911f2

The changes in this PR will be included in the next version bump.

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[eduardocereto]

We need to ping @withastro/maintainers-docs as instructed by Contrib guide after merged.

[TheOtterlord]

Thanks

[sarah11918]

Approving for docs, and updated branch hoping the tests pass this time!

[sarah11918]

Note: added a changeset because this will correct a code example in config ref docs, and should be released as corrected documentation for the content layer API

[eduardocereto]

I know this is a ridiculously small patch but it's my first one. So let me feel proud for a quick moment. :)

Thanks a lot for merging and for all the work you guys do. I love Astro and it has rekindled my interest in frontend work.

I'm looking forward to my next PR.

[ascorbic]

@eduardocereto thanks for the fix! I made the same error in the release blog and did spot that in time, but missed this one entirely