While the dateAgo code internally doesn't seem to care about the argument

(unless its not "withal"), its better to fix the spelling here anyways.

src/IDF/templates/idf/source/mercurial/tree.html

@@ -34,7 +34,7 @@
 <td{if $file.type != 'blob'} colspan="4"{/if}><a href="{$url}">{$file.file}</a></td>
 {if $file.type == 'blob'}
 {if isset($file.date)}
-<td><span class="smaller">{$file.date|dateago:"wihtout"}</span></td> 
+<td><span class="smaller">{$file.date|dateago:"without"}</span></td> 
 <td><span class="smaller">{$file.author|strip_tags|trim}{trans ':'} {$file.log}</span></td>
 {else}<td colspan="2"></td>{/if}
 <td></td>{/if}