Bugfixes for input formats setting page

Issue Summary

File: wordfilter.module
Function: wordfilter_filter()
Case: 'settings'

1.)
< '#description' => t('You can define a global list of words to be filtered on the <a href="%url">wordfilter settings page</a>.', array('%url' => url('admin/settings/wordfilter')))
---
> '#description' => t('You can define a global list of words to be filtered on the <a href="@url">wordfilter settings page</a>.', array('@url' => url('admin/settings/wordfilter')))

Replace %url by @url, otherwise the url is emphasized instead of run through check_plain.

2.)
< return drupal_get_form('wordfilter', $form);
---
> return $form;

Just return the $form because the callback function wordfilter() for rendering the form isn't defined in this module.