Select converter format through type factory

typefactory/convertlatex.cpp

@@ -48,7 +48,7 @@ static std::string latex_escape (const std::string &s) {
   return out;
 }
 
-bool ConvertLatex::save (const std::string &output_file_name) {
+bool ConverterLatex::save (const std::string &output_file_name) {
   if (!parse())
     return false;