Collection Instanciation Error : OCaml

I noticed an error in the `Records/A collection of values with named fields` chapter when instantiating `cow` variable:
```ocaml
type animal =
{
name: string;
color: string;
legs: int;
}
;;

let cow =
{ name: "cow";
color: "black and white";
legs: 4;
}
;;
val cow : animal

cow.name ;;
- : string = "cow"
```
This should be replaced by
```ocaml
type animal =
{
name: string;
color: string;
legs: int;
}
;;

let cow =
{ name = "cow";
color = "black and white";
legs = 4;
}
;;

(*
val cow : animal

cow.name ;;
- : string = "cow"
*)
```

Locate the OCaml chapter section titled “Records/A collection of values with named fields” and search for the shown `cow` example. Verify the record-field syntax and update the example so it evaluates with the expected output; done means the corrected snippet is consistent throughout the section.

Written by the indexing model from the issue text.