BugFix default_settings anchors (#2984)

update anchor names to use correct names the mentioned commit changed the anchors over to use #anchor_{subcategory} from #{subcategory} but didn't correct all instances where anchors where called into the page
this commit broke it
https://github.com/fusionpbx/fusionpbx/commit/45bf2e5fd647200a02985819529dbb6fa0f84449

core/default_settings/default_settings.php

@@ -54,7 +54,7 @@ else {
 			unset($sql);
 
 			messages::add($text['message-update']);
-			header("Location: default_settings.php".(($search != '') ? "?search=".$search : null)."#".$category);
+			header("Location: default_settings.php".(($search != '') ? "?search=".$search : null)."#anchor_".$category);
 			exit;
 		}