use permanent redirect for .well-known/(cal|card)dav, add 'L' flag

.htaccess

@@ -24,8 +24,8 @@ RewriteEngine on
 RewriteRule .* - [env=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
 RewriteRule ^\.well-known/host-meta /public.php?service=host-meta [QSA,L]
 RewriteRule ^\.well-known/host-meta\.json /public.php?service=host-meta-json [QSA,L]
-RewriteRule ^\.well-known/carddav /remote.php/carddav/ [R]
-RewriteRule ^\.well-known/caldav /remote.php/caldav/ [R]
+RewriteRule ^\.well-known/carddav /remote.php/carddav/ [R=301,L]
+RewriteRule ^\.well-known/caldav /remote.php/caldav/ [R=301,L]
 RewriteRule ^apps/calendar/caldav\.php remote.php/caldav/ [QSA,L]
 RewriteRule ^apps/contacts/carddav\.php remote.php/carddav/ [QSA,L]
 RewriteRule ^remote/(.*) remote.php [QSA,L]