Add jupyter lab link

app.py

@@ -197,6 +197,9 @@ if __name__ == "__main__":
                 <a href="https://www.biorxiv.org/content/10.1101/2023.11.28.568918v1">
                     <img src="https://img.shields.io/badge/bioRxiv-2023.11.28.568918-green?style=plastic" alt="Paper" style="display:inline-block; margin-right:10px;">
                 </a>
+                <a href="https://colab.research.google.com/drive/1opud0BVWr76IM8UnGgTomVggui_xC4p0?usp=sharing">
+                    <img src="https://jupyter.org/assets/logos/rectanglelogo-greytext-orangebody-greymoons.svg" alt="JupyterLab" style="display:inline-block; margin-right:10px; width:50px; height:auto;">
+                </a>
             </div>
             <div style="text-align:left; margin-bottom:20px; color: black;">
                 Upload a `.h5ad` single cell gene expression file and select the species (Human/Mouse).