split paragraph

Author: RalfJung

src/libstd/thread/mod.rs

@@ -1308,9 +1308,11 @@ impl<T> JoinHandle<T> {
         &self.0.thread
     }
 
-    /// Waits for the associated thread to finish. In terms of [atomic memory orderings],
-    /// the completion of the associated thread synchronizes with this function returning.
-    /// In other words, all operations performed by that thread are ordered before all
+    /// Waits for the associated thread to finish.
+    ///
+    /// In terms of [atomic memory orderings],  the completion of the associated
+    /// thread synchronizes with this function returning. In other words, all
+    /// operations performed by that thread are ordered before all
     /// operations that happen after `join` returns.
     ///
     /// If the child thread panics, [`Err`] is returned with the parameter given