Fix node example

[jamesvclements]

Description

I think the two readFile calls in the node example was a mistype, you only need one to pass the buffer and trying to call readFile on the result from the first call throws an error.

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Follow the Style Guide.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 24, 2023 1:51pm
example-with-astro	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 24, 2023 1:51pm
example-with-next	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 24, 2023 1:51pm

[joe-bell]

You're absolutely right, thank you @jamesvclements!