Fix typo in Dutch localisation (#2642)

Author: Eitot

Sparkle/nl.lproj/Sparkle.strings

@@ -131,7 +131,7 @@
 "Mac Model" = "Mac-model";
 
 /* No comment provided by engineer. */
-"Memory (MB)" = "Geheuren (MB)";
+"Memory (MB)" = "Geheugen (MB)";
 
 /* No comment provided by engineer. */
 "No" = "Nee";