fix errors

classes/author.rb

@@ -1,16 +1,16 @@
 class Author
-    attr_reader :id, :first_name, :last_name
-    attr_accessor :items
-  
-    def initialize(first_name, last_name)
-      @id = Random.rand(1..1000)
-      @first_name = first_name
-      @last_name = last_name
-      @items = []
-    end
-  
-    def add_item(item)
-      item.author = self
-      @items << item
-    end
-  end
+  attr_reader :id, :first_name, :last_name
+  attr_accessor :items
+
+  def initialize(first_name, last_name)
+    @id = Random.rand(1..1000)
+    @first_name = first_name
+    @last_name = last_name
+    @items = []
+  end
+
+  def add_item(item)
+    item.author = self
+    @items << item
+  end
+end

classes/game.rb

@@ -28,4 +28,4 @@ def last_played_over_two_years_ago?
 
     years_difference >= 2
   end
-end
+end