update preferred time description to mention UTC

schema/ttrss_schema_mysql.sql

@@ -392,7 +392,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('SSL_CERT_SERIAL', 2, '', 'Login with an SSL certificate',3, 'Click to register your SSL client certificate with tt-rss');
 
-insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses server timezone');
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses UTC timezone');
 
 create table ttrss_user_prefs (
    owner_uid integer not null,

schema/ttrss_schema_pgsql.sql

@@ -354,7 +354,7 @@ insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id) valu
 
 insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('SSL_CERT_SERIAL', 2, '', 'Login with an SSL certificate',3, 'Click to register your SSL client certificate with tt-rss');
 
-insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses server timezone');
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses UTC timezone');
 
 create table ttrss_user_prefs (
 	owner_uid integer not null references ttrss_users(id) ON DELETE CASCADE,

schema/versions/mysql/89.sql

@@ -1,6 +1,6 @@
 begin;
 
-insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses server timezone');
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses UTC timezone');
 
 update ttrss_version set schema_version = 89;
 

schema/versions/pgsql/89.sql

@@ -1,6 +1,6 @@
 begin;
 
-insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses server timezone');
+insert into ttrss_prefs (pref_name,type_id,def_value,short_desc,section_id,help_text) values('DIGEST_PREFERRED_TIME', 2, '00:00', 'Try to send digests around specified time', 1, 'Uses UTC timezone');
 
 update ttrss_version set schema_version = 89;