typo: ends -> begins (#2840)

Coeur · web-flow · commit 408dd1640e8c · 2025-05-12T14:15:12.000-04:00
diff --git a/proposals/0433-mutex.md b/proposals/0433-mutex.md
@@ -330,7 +330,7 @@ mutex.withLock {
 // borrow access ends
 
 do {
-  // borrow access ends
+  // borrow access begins
   let locked = mutex.lock()
   ...
   
