Make alerting navigation consistent with serverless

[dedemorton]

Description

The content in the stateful docs should be similar (almost identical) in content and structure to serverless, but unfortunately they have diverged. To better align the docs and address some of the concerns expressed in #2605, we need to change the navigation hierarchy to look something like:

• Alerting
  • Create and manage rules*
    • Custom threshold
    • Inventory threshold
    • Log threshold
    • Metric threshold
    • Monitor status
    • SLO burn rate
    • TLS certificate
    • Uptime duration anomaly
    • View alerts

*check stateful to make sure these names match the UI)

Resources

n/a

Which documentation set does this change impact?

Stateful and Serverless

Feature differences

Some rules that are in stateful are not in serverless, so the navigation will be slightly different across the two docsets.

What release is this request related to?

N/A

Collaboration model

The documentation team

Point of contact.

Main contact: @dede

Stakeholders: