Wrong metrics endpoint when generation Helidon SE project with starter

[dalexandrov]

Environment Details

• Helidon Version: 4.0.0
• Helidon SE
• JDK version: 21
• OS: OSX

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Problem Description

When generating Helidon SE project with a starter: https://helidon.io/starter/4.0.0?step=9&app-type=custom&extra=cors&metrics=true

Readme generates:

# Prometheus Format
curl -s -X GET http://localhost:8080/metrics
# TYPE base:gc_g1_young_generation_count gauge
. . .

# JSON Format
curl -H 'Accept: application/json' -X GET http://localhost:8080/metrics
{"base":...
. . .

Should be `http://localhost:8080/observe/metrics

[barchetta]

I've reproduced with the latest in main using the SE quickstart.