fix: contribute donate button rendering (#8186)

Author: Sahilshrma31

src/content/contribute/index.mdx

@@ -13,12 +13,12 @@ contributors:
 
 The people who contribute to webpack do so for the love of open source, our users and ecosystem, and most importantly, pushing the web forward together. Because of our [Open Collective](https://opencollective.com/webpack) model for funding and transparency, we are able to funnel support and funds through contributors, dependent projects, and the contributor and core teams. To make a donation, click the button below...
 
-<div align="center">
+<div className="flex justify-center">
 
 <a
   href="https://opencollective.com/webpack/donate"
   target="_blank"
-  rel="noopenner noreferrer"
+  rel="noopener noreferrer"
 >
   <img
     src="https://opencollective.com/webpack/donate/button@2x.png?color=blue"