Rollup merge of rust-lang#86453 - akiselev:patch-1, r=dtolnay

stdlib: Fix typo in internal RefCell docs

`BorroeError` => `BorrowError` in [cell.rs](https://github.com/rust-lang/rust/blob/master/library/core/src/cell.rs#L581)

Author: JohnTitor

library/core/src/cell.rs

@@ -585,7 +585,7 @@ pub struct RefCell<T: ?Sized> {
     // Stores the location of the earliest currently active borrow.
     // This gets updated whenver we go from having zero borrows
     // to having a single borrow. When a borrow occurs, this gets included
-    // in the generated `BorroeError/`BorrowMutError`
+    // in the generated `BorrowError/`BorrowMutError`
     #[cfg(feature = "debug_refcell")]
     borrowed_at: Cell<Option<&'static crate::panic::Location<'static>>>,
     value: UnsafeCell<T>,