Fix cron schedule, comment is correct

.github/workflows/itself.yml

@@ -16,7 +16,7 @@ on:
   schedule:
     # Every 10:50 JST
     # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#schedule
-    - cron: '50 1 * * 1'
+    - cron: '50 1 * * *'
   workflow_dispatch:
 
 # Disable all permissions in workflow global as to setup clean room