OO-1658: removed anchor on feed contextHelp

src/main/java/org/olat/course/nodes/feed/_content/access.html

 <fieldset class="clearfix">
-	<legend>$r.contextHelpWithWrapper("Knowledge Transfer#_podcast_access")
+	<legend>$r.contextHelpWithWrapper("Knowledge Transfer")
 	$r.translate("condition.accessModerator.title")</legend>
 	$r.render("moderatorCondition")
 </fieldset>

src/main/java/org/olat/course/nodes/feed/_content/edit.html

 <fieldset class="o_form form-horizontal clearfix">
-	<legend>$r.contextHelpWithWrapper("Knowledge Transfer#_podcast")
+	<legend>$r.contextHelpWithWrapper("Knowledge Transfer")
 	$r.translate("form.title.choose.feed")</legend>
 	
 	#if ($showPreviewLink)