fix: Fix docker image path in readme

[deepakbenny]

Summary

Fixing docker image path mentioned in QuickStart - readme.

Related Linear tickets, Github issues, and Community forum posts

Review / Merge checklist

• PR title and summary are descriptive. (conventions)
• Docs updated or follow-up ticket created.
• Tests included.
• PR Labeled with release/backport (if the PR is an urgent fix that needs to be backported)

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