correct the number of space/newline in DOM tree

[shynur]

see 'files changed'

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Pull Request Overview

This PR corrects whitespace formatting in DOM tree representations within a documentation article about DOM nodes. The changes adjust newline characters in text content to match the actual structure of the HTML being demonstrated.

• Adds an extra newline character to the BODY text content in the first DOM tree example
• Removes one newline character from the final text node in the second DOM tree example

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