fixing newline that should not be at end of the message

Author: jacobwdv

dev/com.ibm.ws.security.utility/resources/com/ibm/ws/security/utility/resources/UtilityMessages.nlsprops

@@ -154,7 +154,7 @@ to your server.xml file:\n\
 \t<include location=\"{0}\" />
 generateaeskey.failFileExists=\
 The {0} file exists and will not be overwritten. Either specify a \n\
-different file name, or remove the existing file before you try again.\n\
+different file name, or remove the existing file before you try again.
 generateaeskey.failFileIsDirectory=\
 The {0} value specified for the file name is a directory. Specify the \n\
 full file name and try again.