Update index.html

Author: JCinnamon

index.html

@@ -675,7 +675,7 @@ <h3>Batch Image Colour Analyzer</h3>
           <span class="tool-arrow">Open tool &rarr;</span>
         </a>
 
-        <a href="https://jcinnamon.github.io/colour-visualizer/" class="tool-card">
+        <a href="https://jcinnamon.github.io/image-colour-visualizer/" class="tool-card">
           <div class="tool-icon">🟦</div>
           <h3>Colour Visualizer</h3>
           <p>Explore colours in image datasets and create palettes and visualizations.</p>