Fix typo. Enginen -> engine. (#87)

docs/en/manuals/input.md

@@ -36,7 +36,7 @@ Consuming input
 
 ## Setting up input bindings
 
-The input bindings is a project wide table that allows you to specify how device input should translate into named *actions* before they are dispatched to your script components and GUI scripts. You can create a new input binding file, <kbd>right click</kbd> a location in the *Assets* view and select <kbd>New... ▸ Input Binding</kbd>. To make the enginen use the new file, change the *Game Binding* entry in "game.project".
+The input bindings is a project wide table that allows you to specify how device input should translate into named *actions* before they are dispatched to your script components and GUI scripts. You can create a new input binding file, <kbd>right click</kbd> a location in the *Assets* view and select <kbd>New... ▸ Input Binding</kbd>. To make the engine use the new file, change the *Game Binding* entry in "game.project".
 
 ![Input binding setting](images/input/setting.png){srcset="images/input/[email protected] 2x"}