bugfix: typo in update-data.md

[iveloff-developer]

Description of what this PR is changing or adding, and why:
It fixes typos in the docs: Beyond UI -> Networking & http -> Update data over the internet

Issues fixed by this PR (if any):

PRs or commits this PR depends on (if any):

Presubmit checklist

• This PR is marked as draft with an explanation if not meant to land until a future stable release.
• This PR doesn’t contain automatically generated corrections (Grammarly or similar).
• This PR follows the Google Developer Documentation Style Guidelines — for example, it doesn’t use i.e. or e.g., and it avoids I and we (first person).
• This PR uses semantic line breaks of 80 characters or fewer.

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[parlough]

Nice catch, thanks for fixing this!

[parlough]

/gcbrun

[flutter-website-bot]

Visit the preview URL for this PR (updated for commit 2a7f208):

https://flutter-docs-prod--pr11273-patch-1-5rr73d4m.web.app