fix more errata

content/pong/move_paddle/decoupling.md

@@ -22,7 +22,7 @@ Let's put something in between them.
 
 We have to ask ourselves: how is it that we want the game to react when we press the buttons? We want the correct paddle to move up or down. That seems like a good abstraction for a Message.
 
-Create a file: **PongFE/Messages/PaddleMoveMessage.ts**
+Create a file: **PongFE/Messages/PaddleMoveMessage.cs**
 
 ```cs
 using Encompass;

content/pong/move_paddle/magic_values.md

@@ -51,7 +51,7 @@ namespace PongFE.Components
 
 And let's add it to our paddle Entity.
 
-In **PongFEGame.ts**
+In **PongFEGame.cs**
 
 ```cs
     ...
@@ -93,7 +93,7 @@ Now let's tell our InputEngine to use it, and why don't we go ahead and make the
                     SendMessage(
                         new MotionMessage(
                             playerInputEntity,
-                            new System.Numerics.Vector2(0, paddleSpeed * (float)dt)
+                            new System.Numerics.Vector2(0, -paddleSpeed * (float)dt)
                         )
                     );
                 }