Add Speaker Identification callout and code examples to Speaker Diarization page

[devin-ai-integration]

Summary

Enhances the Speaker Diarization documentation page to better highlight the Speaker Identification feature, which allows users to replace generic speaker labels (A, B, C) with actual names or roles.

Changes:

• Replaced the existing <Info> callout with a more prominent <Tip> callout titled "Want to name your speakers?" that explains the value proposition of Speaker Identification
• Added a new "Identify speakers by name" section before the FAQ with:
  • Before/after examples showing the transformation from "Speaker A/B" to actual names
  • Python and JavaScript code examples demonstrating how to use Speaker Identification with Speaker Diarization in a single request
  • Link to the full Speaker Identification guide for more details

Local Testing Screenshots

Tip callout at top of page:

Identify speakers by name section:

Review & Testing Checklist for Human

• Confirm the code examples match the actual speech_understanding API structure - specifically the nested request.speaker_identification object with speaker_type and known_values fields
• Verify the <Tip> component renders correctly with the title in production (local testing showed it working)
• Test that the link /docs/speech-understanding/speaker-identification resolves correctly in the docs site

Suggested test plan: Run fern docs dev locally and navigate to the Speaker Diarization page to verify the Tip callout appears prominently and the new "Identify speakers by name" section displays correctly with working code tabs.

Notes

Requested by: Dan Ince

Link to Devin run: https://app.devin.ai/sessions/59ac8fbb9dfc48b48c89d5421426be97

[devin-ai-integration]

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