Fix appcast url

Author: livings124

appcast.xml

@@ -12,7 +12,7 @@
       	<sparkle:releaseNotesLink>https://transmissionbt.com/appcast/releasenotes-beta.html</sparkle:releaseNotesLink>
       	<pubDate>Mon, 10 Mar 2024 21:00:00 -0400</pubDate>
       	<enclosure
-      	url="https://github.com/transmission/transmission/releases/download/4.1.0-beta.1/Transmission-4.1.0-beta.2.dmg"
+      	url="https://github.com/transmission/transmission/releases/download/4.1.0-beta.2/Transmission-4.1.0-beta.2.dmg"
       	sparkle:version="14718.1.2"
       	sparkle:shortVersionString="4.1.0-beta.2"
       	sparkle:dsaSignature="MCwCFAgQa7UGd6lTqemaASJUXNFqW/hnAhRjBFX8uzyX4GiJegfrNPzFHLq2lg=="