message: Fix mssql.linked.server.sql
  Provider string was wrong in the test & added access example to ODBC via SQL Server OpenQuery
diff: @@ -10,8 +10,11 @@ EXEC master.dbo.sp_addlinkedserver
  EXEC sp_serveroption 'clickhouse_link_test','rpc','true';
  EXEC sp_serveroption 'clickhouse_link_test','rpc out','true';
  +
  EXEC('select * from system.numbers limit 10;') at [clickhouse_link_test];
  ---EXEC("select 'Just string'") at [clickhouse_link_test];
  +select count(*) as cnt from OPENQUERY(clickhouse_link_test, 'select * from system.numbers limit 10;')
  +
  +EXEC('select ''Just string''') at [clickhouse_link_test];
  EXEC('select name from system.databases;') at [clickhouse_link_test];
  EXEC('select * from system.build_options;') at [clickhouse_link_test];
  