Link SE-0493 review thread. (#2965)

Author: hborla

proposals/0493-defer-async.md

@@ -5,7 +5,7 @@
 * Review Manager: [Holly Borla](https://github.com/hborla)
 * Status: **Active review (September 22 - October 6, 2025)**
 * Implementation: [swiftlang/swift#83891](https://github.com/swiftlang/swift/pull/83891)
-* Review: ([pitch](https://forums.swift.org/t/support-async-calls-in-defer-bodies/81790))
+* Review: ([pitch](https://forums.swift.org/t/support-async-calls-in-defer-bodies/81790)) ([review](https://forums.swift.org/t/se-0493-support-async-calls-in-defer-bodies/82293))
 
 ## Introduction