Make all leaks safe in language reference
Since it was determined that no leaks were unsafe, some of the documentation is still not clear about this. Here's one example.
@@ -1038,7 +1038,7 @@ be undesired.
* Deadlocks
* Reading data from private fields (`std::repr`)
-* Leaks due to reference count cycles, even in the global heap
+* Leaks of memory and other resources
* Exiting without calling destructors
* Sending signals
* Accessing/modifying the file system
