docs: Add SKD010 slower-than-baseline pitfall example

[moujanrastgoo]

Change description

Related to #2622 and #3134

• Adds new sphinx-gallery subsection Pitfalls and solutions
• Registers subsection in sphinx/conf.py
• Adds SKD010 check example and links from automated checks user guide

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• Documentation was added or updated (if necessary)
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AI usage disclosure

AI tools were involved for:

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[github-actions]

Documentation preview @ a5147af

[auguste-probabl]

Suggested change

	# Find ``SKD010`` in the Tips tab below: a large fit-time ratio without a
	# Find ``SKD010`` in the Issues tab below: a large fit-time ratio without a

[auguste-probabl]

Suggested change

	# With a lighter forest, SKD010 should typically be gone.
	# With a lighter forest, SKD010 should no longer fire.

[auguste-probabl]

this line doesn't seem useful (same in the rest of the example)