fix (#343) : Prevent page refresh when clicking "Fundamentals" button

[helloAmulya]

This PR fixes the issue described in #343 where clicking the "Fundamentals" button caused a full page refresh instead of opening the detailed docs panel.

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Root Cause:
The tag template used {t} as the link text, which did not reference the correct variable and caused navigation instead of triggering the intended panel toggle.

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Screenshot:

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Changes Made:

• Updated the tag template to use ${t} inside the <a> tag, ensuring the correct text is rendered while preventing unintended page reloads.

// Before
const tag = t => `
<span class="tag">
  <a href="/${p.url}">{t}</a>
</span>
`;

// After
const tag = t => `
<span class="tag">
  <a href="/${p.url}">${t}</a>
</span>
`;

Working Example:

Screen.Recording.2025-08-16.at.3.53.58.AM.mov

Related Issue:
Closes #343

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[vkarpov15]

p isn't defined here?