Remove a repeated phrase in UnsafeWorldCell docs (#8590)

I just found a typo while reading the docs.

# Objective

- Fix `UnsafeWorldCell` docs 

## Solution

- Remove the repeated phrase
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Ame 2023-05-10 23:35:27 -06:00 committed by GitHub
parent 76fe2b40c6
commit 636f711d26
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@ -34,7 +34,6 @@ use std::{any::TypeId, cell::UnsafeCell, marker::PhantomData};
/// APIs like [`System::component_access`](crate::system::System::component_access).
///
/// A system then can be executed using [`System::run_unsafe`](crate::system::System::run_unsafe) with a `&World` and use methods with interior mutability to access resource values.
/// access resource values.
///
/// ### Example Usage
///