fix: More clear rext for regs into groups and VOS

perun-oidc-server-webapp/src/main/resources/localization/messages_cs.properties

@@ -86,6 +86,7 @@ phone_number=Telefon
 403_not_in_env_vos_groups_hdr=P\u0159\u00EDstup zam\u00EDtnut
 403_not_in_env_vos_groups_msg=Tato str\u00E1nka se V\u00E1m zobrazuje, proto\u017Ee nespl\u0148ujete podm\u00EDnky \u010Dlenstv\u00ED v organiza\u010Dn\u00EDch jednotk\u00E1ch AAI.
 403_not_in_env_vos_groups_urls=Pomoc\u00ED n\u00E1sleduj\u00FA\u00EDc\u00EDch odkaz\u016F se m\u016F\u017Eete do organiza\u010Dn\u00EDch jednotek registrovat. Pokud nevid\u00EDte \u017E\u00E1dn\u00E9 odkazy, kontaktujte spr\u00E1ve slu\u017Eby pro p\u0159idelen\u00ED p\u0159\u00EDstupu.
+403_not_in_env_vos_groups_urls_register=Zaregistrovat se do {0}
 403_not_in_env_vos_groups_client_contact=Pokud si mysl\u00EDte, \u017Ee v\u00E1m byl p\u0159\u00EDstup odep\u0159en nepr\u00E1vem, nebo chcete p\u0159\u00EDstup z\u00EDskat, kontaktujte spr\u00E1vce slu\u017Eby pomoc\u00ED kontakt\u016F n\u00ED\u017Ee.
 
 403_not_logged_in_hdr=P\u0159\u00EDstup zam\u00EDtnut