Update index.html

Author: tiwut

index.html

@@ -339,6 +339,8 @@ <h2>Source Code</h2>
                 <div class="section-title">
                     <h3>GitHub (RAW)</h3>
                 </div>
+                <h4>v1.6</h4>
+                <a href="https://raw.githubusercontent.com/tiwut/TiwutOS/refs/heads/main/Rust/v1.6/"> Rust -- in Development</a>
                 <h4>v1.5</h4>
                 <a href="https://raw.githubusercontent.com/tiwut/TiwutOS/refs/heads/main/C&CPP/v1.5/kernel.cpp">kernel.cpp</a>
                 <a href="https://raw.githubusercontent.com/tiwut/TiwutOS/refs/heads/main/C&CPP/v1.5/kernel.h">kernel.h</a>