[8.14] [BUG][8.14] Help icon that opens in-product ES|QL docs has changed (backport #5236)

[mergify]

Contributes to #5226

Previews:

• Create an ES|QL rule
• Use ES|QL to investigate events

Twin Serverless PR: https://github.com/elastic/staging-serverless-security-docs/pull/356

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This is an automatic backport of pull request #5236 done by Mergify.

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