Rollup merge of rust-lang#132937 - xmh0511:master, r=m-ou-se

a release operation synchronizes with an acquire operation

Change:
1. `Calls to park _synchronize-with_ calls to unpark` to `Calls to unpark _synchronize-with_ calls to park`
2. `park synchronizes-with _all_ prior unpark operations` to `_all_ prior unpark operations synchronize-with park`

library/std/src/thread/mod.rs

@@ -1021,11 +1021,11 @@ impl Drop for PanicGuard {
 ///
 /// # Memory Ordering
 ///
-/// Calls to `park` _synchronize-with_ calls to `unpark`, meaning that memory
+/// Calls to `unpark` _synchronize-with_ calls to `park`, meaning that memory
 /// operations performed before a call to `unpark` are made visible to the thread that
 /// consumes the token and returns from `park`. Note that all `park` and `unpark`
-/// operations for a given thread form a total order and `park` synchronizes-with
-/// _all_ prior `unpark` operations.
+/// operations for a given thread form a total order and _all_ prior `unpark` operations
+/// synchronize-with `park`.
 ///
 /// In atomic ordering terms, `unpark` performs a `Release` operation and `park`
 /// performs the corresponding `Acquire` operation. Calls to `unpark` for the same