fix excess column in history statistics

This patch fixes a typo in the history stats template.

Previously, the HTML parser would close the travel time table data cell
element but also create a new, empty table data cell in the process.
This empty excess cell would create a new column in the table, causing
all other rows to be shifted in the layout.

Now the open travel time data cell element gets closed properly without
creating a new cell, allowing the whole table to right align neatly.

templates/_history_stats.html.ep

@@ -39,7 +39,7 @@
 			<tr>
 				<th scope="row">Fahrtzeit</th>
 				<td><%= $stats->{min_travel_real_strf} %> Stunden
-					(nach Fahrplan: <%= $stats->{min_travel_sched_strf} %>)<td>
+					(nach Fahrplan: <%= $stats->{min_travel_sched_strf} %>)</td>
 			</tr>
 			<tr>
 				<th scope="row">Wartezeit (nur Umstiege)</th>