[ticket/9567] Newly registered users group description rewording.

Reword 'NEW_MEMBER_GROUP_DEFAULT_EXPLAIN' language entry to make it more linguistically correct.

PHPBB3-9567

phpBB/language/en/acp/board.php

@@ -211,7 +211,7 @@
 	'NEW_MEMBER_POST_LIMIT'			=> 'New member post limit',
 	'NEW_MEMBER_POST_LIMIT_EXPLAIN'	=> 'New members are within the <em>Newly Registered Users</em> group until they reach this number of posts. You can use this group to keep them from using the PM system or to review their posts. <strong>A value of 0 disables this feature.</strong>',
 	'NEW_MEMBER_GROUP_DEFAULT'		=> 'Set Newly Registered Users group to default',
-	'NEW_MEMBER_GROUP_DEFAULT_EXPLAIN'	=> 'If set to yes and a new member post limit is specified newly registered users will be not only put into the <em>Newly Registered Users</em> group, but this group also being their default one. This may come in handy if you want to assign a group default rank and/or avatar the user then inherits.',
+	'NEW_MEMBER_GROUP_DEFAULT_EXPLAIN'	=> 'If set to yes, and a new member post limit is specified, newly registered users will not only be put into the <em>Newly Registered Users</em> group, but this group will also be their default one. This may come in handy if you want to assign a group default rank and/or avatar the user then inherits.',
 
 	'ACC_ADMIN'					=> 'By Admin',
 	'ACC_DISABLE'				=> 'Disable',