Index: wp-admin/edit-link-form.php
===================================================================
--- wp-admin/edit-link-form.php	(revision 10216)
+++ wp-admin/edit-link-form.php	(working copy)
@@ -118,7 +118,7 @@
 	<p id="link-category-add" class="wp-hidden-child">
 		<label class="hidden" for="newcat"><?php _e( '+ Add New Category' ); ?></label>
 		<input type="text" name="newcat" id="newcat" class="form-required form-input-tip" value="<?php _e( 'New category name' ); ?>" aria-required="true" />
-		<input type="button" id="category-add-sumbit" class="add:categorychecklist:linkcategorydiv button" value="<?php _e( 'Add' ); ?>" />
+		<input type="button" id="category-add-submit" class="add:categorychecklist:linkcategorydiv button" value="<?php _e( 'Add' ); ?>" />
 		<?php wp_nonce_field( 'add-link-category', '_ajax_nonce', false ); ?>
 		<span id="category-ajax-response"></span>
 	</p>