chore: remove repetitive words

[friendlyping]

Pull Request Template

Description

remove repetitive words

Type of change

Please delete options that are not relevant.

• [] Docs update

Checklist:

• [ ] I ran bellow commands using the latest version of rust nightly.
• [ ] I ran cargo clippy --all -- -D warnings just before my last commit and fixed any issue that was found.
• [ ] I ran cargo fmt just before my last commit.
• [ ] I ran cargo test just before my last commit and all tests passed.
• [ ] I added my algorithm to the corresponding mod.rs file within its own folder, and in any parent folder(s).
• [ ] I added my algorithm to DIRECTORY.md with the correct link.
• [ ] I checked COUNTRIBUTING.md and my code follows its guidelines.

Please make sure that if there is a test that takes too long to run ( > 300ms), you #[ignore] that or try to optimize your code or make the test easier to run. We have this rule because we have hundreds of tests to run; If each one of them took 300ms, we would have to wait for a long time.