Update project authors statements to Dartino

platforms/stm/disco_fletch/src/fletch_entry.cc

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 #include <stdlib.h>
 
 #include <cmsis_os.h>
 extern "C" {
   #include <lcd_log.h>
 }
 #include <stm32746g_discovery.h>
@@ skipping 125 matching lines @@
   // recursion in the syscalls.c handling of write.
   fletch::Print::DisableStandardOutput();
 
   StartFletch(argument);
 
   // No more to do right now.
   for (;;) {
     osDelay(1);
   }
 }