feat: Update N1C references to F5 WAF for NGINX

[ADubhlaoich]

Proposed changes

This commit updates a handful of references to F5 WAF for NGINX that remain as part of the NGINX One Console documentation set. Some are still left: one explicitly references the product name changes, and the other refers to a UI element I don't think has been updated yet.

Closes #1212

Checklist

Before sharing this pull request, I completed the following checklist:

• I read the Contributing guidelines
• My branch adheres to the Git conventions
• My content changes adhere to the F5 NGINX Documentation style guide
• If my changes involve potentially sensitive information¹, I have assessed the possible impact
• I have waited to ensure my changes pass tests, and addressed any discovered issues

Footnotes

1. Potentially sensitive information includes personally identify information (PII), authentication credentials, and live URLs. Refer to the style guide for guidance about placeholder content. ↩

[github-actions]

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[aknot242]

@ADubhlaoich - I notice nap is still used in the file paths. Is that getting too picky?

[mjang]

Thank you for covering the change in N1C

• I need to set up an issue for the appropriate (internal) repo for the API docs
• I see instances of "NGINX App Protect" elsewhere in production content, such as https://docs.nginx.com/nginx-instance-manager/fundamentals/tech-specs/#system-sizing-app-protect (Based on git grep "NGINX App Protect")

[ADubhlaoich]

@aknot242 It's not, though I won't make the push for that until it's deemed necessary.

URL changes can have a huge impact outside of docs: even if we add redirects and update references we're aware of, we still lose a certain amount of ambiguous SEO "juice".

@mjang Travis and I will be syncing up this month regarding the consolidation and rewriting of WAF-related content that exists within the NIM documentation set.