Update nav.html

Author: Someshdiwan

site/_includes/nav.html

@@ -1,7 +1,9 @@
-<h2>📘 Navigation</h2>
-<ul>
-  <li><a href="{{ '/README.md' | relative_url }}">🏠 Home</a></li>
-  <li><a href="{{ '/site/Explaination.md' | relative_url }}">📖 Explaination</a></li>
-  <li><a href="{{ '/site/content.md' | relative_url }}">📚 All Contents</a></li>
-  <li><a href="https://github.com/Someshdiwan/JavaEvolution-Learning-Growing-Mastering" target="_blank">🌐 GitHub Repo</a></li>
-</ul>
+<nav class="sidebar">
+  <h2>📘 Navigation</h2>
+  <ul>
+    <li><a href="/JavaEvolution-Learning-Growing-Mastering/site/index.html">Home</a></li>
+    <li><a href="/JavaEvolution-Learning-Growing-Mastering/site/Explaination.html">Explaination</a></li>
+    <li><a href="/JavaEvolution-Learning-Growing-Mastering/site/content.html">All Contents</a></li>
+    <li><a href="https://github.com/Someshdiwan/JavaEvolution-Learning-Growing-Mastering" target="_blank">GitHub Repo</a></li>
+  </ul>
+</nav>