Add modern-css.com attribution to footer

[Copilot]

Adds attribution line acknowledging modern-css.com as inspiration source.

Changes

Updated footer in both templates to include new attribution line:

• templates/index.html
• templates/slug-template.html

The line appears between the "Made with" credit and GitHub link:

<footer>
  <p><a href="/">java.evolved</a> — Java has evolved. Your code can too.</p>
  <p>Made with ❤️ by <a href="https://github.com/brunoborges">Bruno Borges</a> and <a href="https://github.com/features/copilot">GitHub Copilot</a></p>
  <p>Inspired by <a href="https://modern-css.com" target="_blank" rel="noopener">modern-css.com</a></p>
  <p><a href="https://github.com/javaevolved/javaevolved.github.io">View on GitHub</a></p>
</footer>

Visual

Homepage:

Detail pages:

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add inspiration source to footer</issue_title>
<issue_description>Add to the footer that this website was inspired by modern-css.com</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Add inspiration source to footer #20

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.