Fix mismatch in FAT copies on deleting title

arm9/src/installmenu.c

@@ -306,6 +306,7 @@ static bool delete(Menu* m)
 		{
 			if (remove(fpath) == 0)
 			{
+				nandWritten = true;
 				result = true;
 				messageBox("\x1B[42mFile deleted.\x1B[47m");
 			}

arm9/src/storage.c

@@ -321,6 +321,9 @@ bool deleteDir(char const* path)
 {
 	if (!path) return false;
 
+	if(strncmp(path, "nand:", 5) == 0)
+		nandWritten = true;
+
 	if (strcmp("/", path) == 0)
 	{
 		//oh fuck no