doc/doxygen/chapters/470_simgrid.doxy: simgrid 3.18 is fine

doc/doxygen/chapters/470_simgrid.doxy

@@ -2,7 +2,7 @@
  *
  * Copyright (C) 2010-2017                                CNRS
  * Copyright (C) 2011-2012,2014,2016-2017                 Inria
- * Copyright (C) 2009-2011,2014-2017                      Université de Bordeaux
+ * Copyright (C) 2009-2011,2014-2018                      Université de Bordeaux,
  *
  * StarPU is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
@@ -19,7 +19,7 @@
 /*! \page SimGridSupport SimGrid Support
 
 StarPU can use Simgrid in order to simulate execution on an arbitrary
-platform. This was tested with simgrid from 3.11 to 3.16,
+platform. This was tested with simgrid from 3.11 to 3.16, and 3.18
 other versions may have compatibility issues. 3.17 notably does not build at
 all.