QtIFW

Fix missing details output in example.

Commit 17e29fc8d3 introduced a behavior change, the
installer.components is no longer a array property,
it is now a function returning an array. Update docs.

Change-Id: I4fcdee6cff4572012236e1ac0768013a1e5689ac
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>