Fix organ farm progress update.

Closes #594.

src/uncategorized/endWeek.tw

@@ -45,13 +45,13 @@
 
 <<if $organs.length > 0>>
 <<run $organs.forEach(function(o) {
-	if ($organs[o].weeksToCompletion > 0) {
+	if (o.weeksToCompletion > 0) {
 		if ($organFarmUpgrade == 3) {
-			$organs[o].weeksToCompletion -= 4;
+			o.weeksToCompletion -= 4;
 		} else if ($organFarmUpgrade == 2) {
-			$organs[o].weeksToCompletion -= 2;
+			o.weeksToCompletion -= 2;
 		} else {
-			$organs[o].weeksToCompletion--;
+			o.weeksToCompletion--;
 		}
 	}
 })>>