update wechat page

Signed-off-by: Chris Abraham <[email protected]>

Author: cjyabraham

wechat.html

@@ -22,7 +22,7 @@ <h2>Connect with us</h2>
 
         <p class="lead">Connect with us on WeChat by scanning this QR code!</p>
 
-        <img src="/assets/images/pytorch_wechat_qr_code.png" alt="PyTorch WeChat QR Code"/>
+        <img src="/assets/images/pytorch_wechat_qr_code.png" style="max-width:300px;" alt="PyTorch WeChat QR Code"/>
 
       </div>
     </div>