docs: add translarions to part-2

docs/en/Tutorials/Part-2.md

@@ -120,6 +120,8 @@ Open the `en.json` (*the English translations*) file and change the content as b
     "Menu:BookStore": "Book Store",
     "Menu:Books": "Books",
     "Actions": "Actions",
+    "Close": "Close",
+    "Delete": "Delete",
     "Edit": "Edit",
     "PublishDate": "Publish date",
     "NewBook": "New book",
@@ -127,6 +129,7 @@ Open the `en.json` (*the English translations*) file and change the content as b
     "Type": "Type",
     "Price": "Price",
     "CreationTime": "Creation time",
+    "AreYouSure": "Are you sure?",
     "AreYouSureToDelete": "Are you sure you want to delete this item?",
     "Enum:BookType:0": "Undefined",
     "Enum:BookType:1": "Adventure",