QDBusAbstractInterface/Doc: fix example to match the description

The docs say "This example illustrates function calling with 0, 1 and 2
parameters" because it was copied from the synchronous call()
documentation. But the snippet didn't do that, because back in Qt 4 when
this was created, it was too difficult to exemplify that for
asynchronous use. It now no longer is, with lambdas.

Drive-by update the docs for both functions to refer to each other.

Fixes: QTBUG-121873
Pick-to: 6.6 6.7
Change-Id: I664b9f014ffc48cbb49bfffd17b089b7f77c1cde
Reviewed-by: Ievgenii Meshcheriakov <ievgenii.meshcheriakov@qt.io>

0 files changed, 0 insertions, 0 deletions