Add a reference links to incident integrations

[estherk15]

What does this PR do? What is the motivation?

• Add reference links to Incident management integrations
• Remove the Private Zoom page since the integration page is public and provides the same detail of information.
• DOCS-5932

Merge instructions

Merge readiness:

• Ready for merge

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Additional notes

[github-actions]

Preview links (active after the build_preview check completes)

Removed or renamed files (these should redirect)

• https://docs-staging.datadoghq.com/esther/docs-5932-zoom-incident-management/service_management/incident_management/zoom_integration

Modified Files

• https://docs-staging.datadoghq.com/esther/docs-5932-zoom-incident-management/service_management/incident_management/guides/

[buraizu]

Left one suggestion, but also wanted to confirm if it's expected for the service_management/incident_management/zoom_integration link to not be redirecting. Would it potentially be helpful to add a redirect for this in the pull_config.yaml file, for anyone who might have this link bookmarked?

[estherk15]

Left one suggestion, but also wanted to confirm if it's expected for the service_management/incident_management/zoom_integration link to not be redirecting. Would it potentially be helpful to add a redirect for this in the pull_config.yaml file, for anyone who might have this link bookmarked?

Good call, I assumed it wasn't used, but you never know!