Code Comment Inconsistency

[YichiZhang0613]

In bson-rust-main/src/bson.rs, the comment indicates that this method will panic when it is called on a case which contains a Decimal128 value, but the code will not panic when input is a Decimal128

    /// Note: If this method is called on a case which contains a `Decimal128` value, it will panic.
    pub fn into_relaxed_extjson(self) -> Value {
        match self {
            Bson::Double(v) if v.is_nan() => {
                let s = if v.is_sign_negative() { "-NaN" } else { "NaN" };

                json!({ "$numberDouble": s })
            }
            ...
            Bson::Decimal128(v) => json!({ "$numberDecimal": v.to_string() }),
            ...
        }
    }

[abr-egn]

Looks like we missed this comment when we added support for human-readable Decimal128 handling in #404 - thanks for flagging this!