Update the Micrometer Guided Install to reflect OTel

[kford-newrelic]

Description

The current Micrometer Guided Install experience continues to point to this archived repo, even though there's a recommended OTel approach instead.

(Is it enough to update the experience to just link to the OTel shim instructions??)

Acceptance Criteria

The updated Guided Install experience points to an OTel recommended approach instead.

Design Consideration/Limitations

N/A

Dependencies

Otel shim instructions

Additional context

Original Jira request - NR-180757