fix(expense tracker): logical error in description (#7720)

If we are referencing by id and not index then --id 1 would remove the first element making the summary 10 and not 20

Solution: delete the second element instead to make the summary add up correctly.

src/data/projects/expense-tracker.md

@@ -62,7 +62,7 @@ $ expense-tracker list
 $ expense-tracker summary
 # Total expenses: $30
 
-$ expense-tracker delete --id 1
+$ expense-tracker delete --id 2
 # Expense deleted successfully
 
 $ expense-tracker summary
@@ -83,4 +83,4 @@ You can implement the application using any programming language of your choice.
 
 <hr />
 
-This project idea is a great way to practice your logic building skills and learn how to interact with the filesystem using a CLI application. It will also help you understand how to manage data and provide useful information to users in a structured way.
+This project idea is a great way to practice your logic building skills and learn how to interact with the filesystem using a CLI application. It will also help you understand how to manage data and provide useful information to users in a structured way.