Fix link for help center for duck ai

[karlenDimla]

Task/Issue URL: https://app.asana.com/1/137249556945/project/488551667048375/task/1212392784625805?focus=true

Description

Fixed the link for duck ai help center in the feedback flow

Steps to test this PR

QA-Optional
Video: https://app.asana.com/app/asana/-/get_asset?asset_id=1212401965736899

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Note

Updates the Duck AI subscriber-only help URL constant in FeedbackHelpUrlProvider.

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[karlenDimla]

• Fix link for help center for duck ai #7345 👈 (View in Graphite)
• develop

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