Enhance Accessibility and User Experience in Default HTML Template

[Nithin310]

This issue proposes minor but impactful improvements to the default HTML template for better accessibility, compatibility, and user experience. As this involves small, beginner-friendly changes, it is labeled as a good first issue:

1. Updated the favicon to include type="image/png" for improved browser compatibility.
2. Enhanced the message to provide a clearer and more user-friendly explanation for scenarios where JavaScript is disabled.
3. Updated the lang attribute in the tag to lang="en-US" to improve accessibility and align with best practices.

These updates ensure the template adheres to modern standards and provide an opportunity for new contributors to get started with a simple yet meaningful improvement.

Tag: good first issue