Docs: fix links to D-Bus examples

"Example" was removed from the titles.

Pick-to: 6.5
Change-Id: Ie322180fbda328cd6e3e03c7c15f6255809b619c
Reviewed-by: Andreas Eliasson <andreas.eliasson@qt.io>
Reviewed-by: Safiyyah Moosa <safiyyah.moosa@qt.io>
Reviewed-by: Øystein Heskestad <oystein.heskestad@qt.io>

src/dbus/doc/src/dbus-adaptors.qdoc

@@ -44,7 +44,7 @@
       \li \l{Declaring Slots in D-Bus Adaptors}
       \li \l{Declaring Signals in D-Bus Adaptors}
       \li \l{The Qt D-Bus Type System}
-      \li In the \l{D-Bus Complex Ping Pong Example}, \c complexpong.h and
+      \li In the \l{D-Bus Complex Ping Pong} example, \c complexpong.h and
           \c complexpong.cpp show an implementation of QDBusAbstractAdaptor.
     \endlist
 
@@ -87,7 +87,7 @@
 
     Asynchronous slots are marked by the keyword \l Q_NOREPLY in the method
     signature, before the \c void return type and the slot name. The \c quit()
-    slot in the \l {D-Bus Complex Ping Pong Example} is an example of this.
+    slot in the \l {D-Bus Complex Ping Pong} example is an example of this.
 
     \section1 Input-Only Slots
 
@@ -193,8 +193,8 @@
     However, signals must still be emitted. The easiest way to emit an adaptor
     signal is to connect another signal to it, so that Qt's signals and slots
     mechanism automatically emits the adaptor signal, too. This can be done in
-    the adaptor's constructor, as you can see in the \l {D-Bus Complex Ping
-    Pong Example}.
+    the adaptor's constructor, as you can see in the \l {D-Bus Complex Ping Pong}
+    example.
 
     The QDBusAbstractAdaptor::setAutoRelaySignals() convenience function can also
     be used to make and break connections between signals in the real object and

src/dbus/doc/src/qtdbus-overview.qdoc

@@ -164,7 +164,7 @@
     This feature can be enabled on a per-application basis by setting the
     \c QDBUS_DEBUG environment variable before running each application.
     For example, we can enable debugging only for the car in the
-    \l{D-Bus Remote Controlled Car Example} by running the controller and the
+    \l{D-Bus Remote Controlled Car} example by running the controller and the
     car in the following way:
 
     \snippet code/doc_src_introtodbus.qdoc QDBUS_DEBUG