Update 0-sponsors.md

Author: Shannon Appelcline

manuscript/0-sponsors.md

@@ -90,6 +90,6 @@ Thanks to the following who have offered financial contributions to the #SmartCu
 
 If you would like to support this project and be added to this list of financial contributors, you can do so via [Support #SmartCustody Book Crowdfunding](https://btcpay.blockchaincommons.com/apps/r6JPAMd5pUed6x4iQChstkkUx3q/crowdfund) page (or use the QR code below) of our [BTCPay](https://btcpay.blockchaincommons.com/) server, or contact [ChristopherA](mailto:ChristopherA@blockchaincommons.com) directly.
 
-{align: middle, width: "50%"}
+{align: middle, width: "25%"}
 ![](resources/support-btcpay.png)