fix: use the proper annualized return in PnL tab

[horvathmarton]

Fixed bugs

• use the proper annualized return in PnL tab

Reviewer checklist

• [x] The code functionally does what it supposed to do (implements the feature or fixes the bug).
• [x] The code quality meets the standards.
• [x] Tests are added to check the feature or avoid regression to a bug.
• [x] The documentation is updated (both Postman, wiki and docstrings) if applicable.
• [x] The logging if up to date.

references #15