[Stream] Remove trailing spaces

[vil02]

Summary

This PR removes some trailing spaces.

Similar to #19700.

[hyperlint-ai]

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PR Change Summary

Removed trailing spaces across multiple documentation files to improve formatting consistency.

• Eliminated trailing spaces in various sections of the documentation.
• Ensured uniformity in formatting for better readability.
• Updated multiple files related to video streaming and transformations.

Modified Files

• src/content/docs/stream/edit-videos/applying-watermarks.mdx
• src/content/docs/stream/transform-videos/index.mdx
• src/content/docs/stream/uploading-videos/player-api.mdx
• src/content/docs/stream/uploading-videos/resumable-uploads.mdx
• src/content/docs/stream/uploading-videos/upload-via-link.mdx
• src/content/docs/stream/viewing-videos/using-the-stream-player/index.mdx
• src/content/docs/stream/webrtc-beta.mdx

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[kodster28]

Thanks @vil02!

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