Enhance YouTube link in demo section

[FuJacob]

Updated demo section to emphasize YouTube link.

Summary

Validation

Linked issues

Risk / rollout notes

Greptile Summary

This PR bolds the "Watch on YouTube" link in the demo section of README.md by wrapping the anchor text in <strong> tags, matching the existing style already applied to the "Visit the landing page →" link.

• The only changed line is the YouTube anchor text in the ## Demo section of README.md, wrapping it in <strong> for visual emphasis.
• No code, logic, or configuration is affected.

Confidence Score: 5/5

Safe to merge — the change is a single-line cosmetic update to the README with no functional impact.

The only change is bolding the YouTube link text in the demo section of README.md, which matches the style already used for the landing page link directly above it. There are no logic, configuration, or code changes.

No files require special attention.

Important Files Changed

Filename	Overview
README.md	Wraps YouTube link text in <strong> tags for visual emphasis, consistent with the existing bold pattern used on the landing page link above it.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["README.md — Demo section"] --> B["<a href='YouTube URL'>"]
    B -->|before| C["Watch on YouTube"]
    B -->|after| D["<strong>Watch on YouTube</strong>"]

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_{Reviews (1): Last reviewed commit: "Fix formatting issues in README.md" | Re-trigger Greptile}