Documentation improvement: clarify function assignment behavior

まだ誰も着手していません。

I was reading the Function expressions section and noticed a wording choice that confused me a little.

The section mentions that we can "copy a function to another variable". Maybe the intention is to show that functions are values in JavaScript, the wording initially made me think that a new function was being created.

**issue in the section -> url -> https://javascript.info/function-expressions
topic is "Function is a Value"**

the example code was ->
function sayHi() { // (1) create
alert( "Hello" );
}

let func = sayHi; // (2) copy

func(); // Hello // (3) run the copy (it works)!
sayHi(); // Hello // this still works too (why wouldn't it)

My understanding is that func receives a reference to the same function object rather than creating an independent copy of the function itself.
There maybe a chance that i have misunderstood it , the copy could mean the reference is copied and a little context about reference would help even if it is included in the previous section.

This is not a major issue, but I thought a small clarification might help readers who are learning about values and references.

Thank you so much for the documentation

https://javascript.info/function-expressions の Function expressions セクションを開き、「Function is a Value」トピックとその代入例を見つけてください。「copy a function」に関する表現を確認し、同じ関数オブジェクトへの参照が代入されることを明確にしつつ、例の動作を維持してください。学習者にとって説明が曖昧でなく、例が引き続き正しい状態になれば完了です。

索引モデルが issue の本文から書いたものです。