Don't work well with inline private

[Paxa]

class Example
   def public_method1; end

  private def private_method; end

  def other_public_method; end
end

sdoc see other_public_method as private method

[zzak]

This is the way RDoc treats the private keyword, and unrelated to SDoc.. but we should be able to fix it

[zzak]

Closing this since it's already been reported upstream in ruby/rdoc#354 and ruby/rdoc#355

Thank you!