Fix README

README.md

@@ -559,7 +559,7 @@ public interface IPageContainerCallbackReceiver
 }
 ```
 
-Note that if you implement `IPageContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the page,  
+Note that if you implement `IPageContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the container,  
 it will be registered to `PageContainer` without calling `PageContainer.AddCallbackReceiver()`.
 
 #### Lifecycle events of the modal
@@ -631,7 +631,7 @@ public interface IModalContainerCallbackReceiver
 }
 ```
 
-Note that if you implement `IModalContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the page,  
+Note that if you implement `IModalContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the container,  
 it will be registered to `ModalContainer` without calling `ModalContainer.AddCallbackReceiver()`.
 
 #### Lifecycle events of the sheet
@@ -695,7 +695,7 @@ public interface ISheetContainerCallbackReceiver
 }
 ```
 
-Note that if you implement `ISheetContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the page,  
+Note that if you implement `ISheetContainerCallbackReceiver` to `MonoBehaviour` and attach it to GameObject of the container,  
 it will be registered to `SheetContainer` without calling `SheetContainer.AddCallbackReceiver()`.
 
 #### Use async methods instead of coroutines

README_JA.md

@@ -565,7 +565,7 @@ public interface IPageContainerCallbackReceiver
 }
 ```
 
-なお`IPageContainerCallbackReceiver`を`MonoBehaviour`に実装してページのGameObjectにアタッチしておけば、  
+なお`IPageContainerCallbackReceiver`を`MonoBehaviour`に実装してコンテナのGameObjectにアタッチしておけば、  
 `PageContainer.AddCallbackReceiver()`を呼ばなくても初期化時に`PageContainer`に登録されます。
 
 #### モーダルのライフサイクルイベント
@@ -637,7 +637,7 @@ public interface IModalContainerCallbackReceiver
 }
 ```
 
-なお`IModalContainerCallbackReceiver`を`MonoBehaviour`に実装してモーダルのGameObjectにアタッチしておけば、  
+なお`IModalContainerCallbackReceiver`を`MonoBehaviour`に実装してコンテナのGameObjectにアタッチしておけば、  
 `ModalContainer.AddCallbackReceiver()`を呼ばなくても初期化時に`ModalContainer`に登録されます。
 
 #### シートのライフサイクルイベント
@@ -701,7 +701,7 @@ public interface ISheetContainerCallbackReceiver
 }
 ```
 
-なお`ISheetContainerCallbackReceiver`を`MonoBehaviour`に実装してシートのGameObjectにアタッチしておけば、  
+なお`ISheetContainerCallbackReceiver`を`MonoBehaviour`に実装してコンテナのGameObjectにアタッチしておけば、  
 `SheetContainer.AddCallbackReceiver()`を呼ばなくても初期化時に`SheetContainer`に登録されます。
 
 #### コルーチンの代わりに非同期メソッドを使う