Raise liquid argument error instead of ruby argument

Wrong number of arguments for filter invocation now raises
Liuqid::ArgumentError but not ::ArgumentError

lib/liquid/strainer.rb

@@ -52,6 +52,8 @@ module Liquid
       else
         args.first
       end
+    rescue ::ArgumentError => e
+      raise Liquid::ArgumentError.new(e.message)
     end
 
     def invokable?(method)