fix(feedback): Update docs on Feedback attachments

[JoshuaMoelans]

Before

• https://develop.sentry.dev/sdk/telemetry/feedbacks/#attaching-screenshots
• https://develop.sentry.dev/sdk/data-model/envelope-items/#user-feedback:~:text=Attaching%20Screenshots%3A

After
(awaiting vercel preview)

DESCRIBE YOUR PR

With this PR in native getsentry/sentry-native#1414 we noticed the docs are outdated, since Feedback can get more than just screenshots attached (see this event for example).

I updated the docs to be more generic as to what someone can attach to Feedbacks.

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  Thanks in advance for your help!

PRE-MERGE CHECKLIST

Make sure you've checked the following before merging your changes:

• Checked Vercel preview for correctness, including links
• PR was reviewed and approved by any necessary SMEs (subject matter experts)
• PR was reviewed and approved by a member of the Sentry docs team

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Project	Deployment	Actions	Updated (UTC)
develop-docs	Ready	Preview, Comment	Jan 30, 2026 8:58am

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
sentry-docs	Ignored	Preview	Jan 30, 2026 8:58am