docs: update maintenance tasks instructions in README

Clarified instructions for maintenance tasks regarding the template repository.

Author: Flashky

README.md

@@ -97,7 +97,7 @@ To privately manage your input files for each day.
 <a name="maintenance-tasks"></a>
 ## 🛠️ Maintenance Tasks
 
-> These steps should only be performed on the original **template repository**, *not* on the current year's copy.
+> ⚠️ These steps should be performed on the original **template repository** before creating the new repository.
 
 ### Update Dependencies