improve comment

Author: slavaleleka

bamboo-specs/auto-build.yaml

@@ -327,6 +327,8 @@ branch-overrides:
 
       # run release build at 22:00 (UTC+3) every Monday, Wednesday, Friday
       # https://confluence.atlassian.com/bamboo/constructing-a-cron-expression-in-bamboo-289277372.html
+      # it is needed in the end of the day to collect all changes
+      # made by filter list maintainers during the workday
       triggers:
         - cron:
             expression: 0 0 22 ? * MON,WED,FRI