Update pdf-generation.mdx

[kathayl]

add browser.close()

Summary

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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• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.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 PDF generation documentation to include the closing of the browser after generating the PDF.

• Added a call to close the browser after PDF generation
• Improved resource management in the PDF generation process

Modified Files

• src/content/docs/browser-rendering/how-to/pdf-generation.mdx

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[github-actions]

Preview URL: https://f7a72080.preview.developers.cloudflare.com
Preview Branch URL: https://kathayl-patch-9.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/browser-rendering/how-to/pdf-generation/	https://kathayl-patch-9.preview.developers.cloudflare.com/browser-rendering/how-to/pdf-generation/