Guide: awkward wording "the range function is a function" provided by Rust

[bjpop]

Section 11.1, for loops says "In our example, the range function is a function, provided by Rust, "

The repetition of the word "function" is awkward.

The "provided by Rust" is redundant.

I suggest re-wording to: "The range function takes a start and end position, and returns an iterator over those values."