=doc #3689 Don't rewrite arrows in doc and samples

akka-samples/akka-sample-main-scala/src/main/scala/sample/hello/Greeter.scala

@@ -12,7 +12,7 @@ object Greeter {
 
 class Greeter extends Actor {
   def receive = {
-    case Greeter.Greet ⇒
+    case Greeter.Greet =>
       println("Hello World!")
       sender ! Greeter.Done
   }

akka-samples/akka-sample-main-scala/src/main/scala/sample/hello/HelloWorld.scala

@@ -17,7 +17,7 @@ class HelloWorld extends Actor {
 
   def receive = {
     // when the greeter is done, stop this actor and with it the application
-    case Greeter.Done ⇒ context.stop(self)
+    case Greeter.Done => context.stop(self)
   }
 }
 

akka-samples/akka-sample-main-scala/src/main/scala/sample/hello/Main2.scala

@@ -21,7 +21,7 @@ object Main2 {
   class Terminator(ref: ActorRef) extends Actor with ActorLogging {
     context watch ref
     def receive = {
-      case Terminated(_) ⇒
+      case Terminated(_) =>
         log.info("{} has terminated, shutting down system", ref.path)
         context.system.shutdown()
     }