Add some more information about our WAF set up to the documentation

[mikelittle]

@rmccue shared a response to a customer from about our WAF configuration in Slack https://hmn.slack.com/archives/C01CD62UNDN/p1734011343668479

Though we cannot share all of the information for commercial/Confidentiality reasons, we can likely enhance the documentation we currently provide https://docs.altis-dxp.com/cloud/firewall/

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Acceptance Criteria

• Flesh out our WAF documentation with more information
• Obtain specific approval from @rmccue for the final page.

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For Altis Team Use

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• Has the acceptance criteria been met?
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