Update information about Miroslav Morhac

git-svn-id: http://root.cern.ch/svn/root/trunk@40585 27541ba8-7e3a-0410-8455-c3a389f83636

README/CREDITS

@@ -552,9 +552,9 @@ N: Lorenzo Moneta
 E: Lorenzo.Moneta@cern.ch
 D: Math libraries
 
-N: Miroslav Morhac
+N: Miroslav Morhac (died on August 11 2011)
 E: fyzimiro@savba.sk
-D: TSpectrum class
+D: TSpectrum classes
 
 N: Dave Morrison
 E: dave@bnl.gov