Update faq.mdx

[kathayl]

new FAQ Q: Why is my screenshot blurry?

Summary

Screenshots (optional)

Documentation checklist

• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

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PR Change Summary

Updated the FAQ section to address a common issue regarding blurry screenshots.

• Added a new FAQ entry about blurry screenshots.
• Provided a solution for improving screenshot clarity by adjusting deviceScaleFactor.

Modified Files

• src/content/docs/browser-rendering/faq.mdx

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/browser-rendering/	@mchenco, @cloudflare/pcx-technical-writing, @celso, @danielgek, @kathayl, @ToriLindsay

[github-actions]

Preview URL: https://9356d495.preview.developers.cloudflare.com
Preview Branch URL: https://kathayl-patch-8.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/browser-rendering/faq/	https://kathayl-patch-8.preview.developers.cloudflare.com/browser-rendering/faq/