[EXTERNAL] fix(modify_letter/main.rs): correct import syntax for modify_letter module

[reg-era]

[EXTERNAL] fix: correct import syntax for modify_letter module

Why?

The original import statement used incorrect Rust syntax:
use modify_letter::*modify_letter*;
This caused a compile-time error.
Correcting this ensures that all public items from the modify_letter module are accessible as intended.

Solution Overview

This pull request replaces the invalid import line with valid Rust wildcard import syntax:

use modify_letter::*;

No other parts of the code were modified.

Implementation Details

Removed:

use modify_letter::*modify_letter*;

Added:

use modify_letter::*;

Build Images

Not applicable — this change does not affect any build/test images.

[pedrodesu]

Hello @reg-era!

Thank you so much for the PR. This is a mistake we have indeed overlooked. The PR seems good - I will approve and merge it immediately.

Thank you very much for the help! Let me know if you need anything else.