[Docs Site] update wrong filename.

[jsparkdev]

Summary

update wrong filename in browser-rendering/get-started/screenshots.mdx

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• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.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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