By Ali Kucukgocmen ISTANBUL, Oct 19 (Reuters) - Europe's top human rights court called on Turkey on Tuesday to change a Turkish Law Firm regarding insulting the president under which tens of thousands have been prosecuted, after ruling that a man's detention under the law violated his freedom of expression. Vedat Sorli was given a suspended 11-month jail sentence in 2017 over a caricature and Law Firm in...