Merge pull request #650 from ptrktn/main

Omit parentheses in no‑arg defs

ruby/gilded_rose.rb

@@ -62,7 +62,7 @@ class Item
     @quality = quality
   end
 
-  def to_s()
+  def to_s
     "#{@name}, #{@sell_in}, #{@quality}"
   end
 end