Update index.bs

Co-authored-by: Kagami Sascha Rosylight <[email protected]>

Author: youennf

index.bs

@@ -6398,6 +6398,7 @@ for="value-with-size">value</dfn> and <dfn for="value-with-size">size</dfn>.
  1. Assert: |container| has \[[queue]] and \[[queueTotalSize]] internal slots.
  1. If ! [$IsNonNegativeNumber$](|size|) is false, throw a {{RangeError}} exception.
  1. If |size| is +∞, throw a {{RangeError}} exception.
+ 1. Let |enqueuedValue| be |value|.
  1. If |container| has an \[[isOwning]] internal slot whose value is true, perform the following steps:
     1. Set |enqueuedValue| to ? [$StructuredTransferOrClone$](|value|, |transferList|).
  1. [=list/Append=] a new [=value-with-size=] with [=value-with-size/value=] |enqueuedValue| and