style: simplify statements for readability

[hamirmahal]

Closes #6977

Motivation

Some lines like

format!("The `{}` attribute requires an argument.", name)

aren't as readable as they could be.

Solution

We can replace lines like

format!("The `{}` attribute requires an argument.", name)

with

format!("The `{name}` attribute requires an argument.")

to improve code readability and maintainability.

[hamirmahal]

This shouldn't cause any user-facing changes.

The goal of this pull request is to improve code readability and developer productivity.

[nurmohammed840]

Nice!
Did you use any tools for this, or was it done manually?

[hamirmahal]

I did! I used clippy.

[Darksonn]

Thanks.

[hamirmahal]

You're welcome.