Fix references to Async

Author: teh

documentation.md

@@ -328,7 +328,7 @@ Haskell concurrency design patterns along the way.
 
 In fact, [distributed-process-async][distributed-process-async] does not really consider the
 *task layer* in great detail. We provide an API comparable to remote's
-`Promise` in `Control.Distributed.Process.Platform.Async`. This API however,
+`Promise` in `Control.Distributed.Process.Async`. This API however,
 is derived from Simon Marlow's [Control.Concurrent.Async][async] package, and is not
 limited to blocking queries on `Async` handles in the same way. Instead our
 [API][d-p-async-async] handles both blocking and non-blocking queries, polling

tutorials/4ch.md

@@ -342,7 +342,7 @@ data BlockingQueue a = BlockingQueue
 ### Making use of Async
 
 So **how** can we execute this `Closure (Process a)` without blocking the server
-process itself? We can use the `Control.Distributed.Process.Platform.Async` API
+process itself? We can use the `Control.Distributed.Process.Async` API
 to execute each task asynchronously and provide a means for waiting on the result.
 
 In order to use an `Async` handle to get the result of the computation once it's