Doc: Fix documentation warnings

* Remove \generatelist example[files|images] commands, they do not
  produce any output, only warnings.
* Add missing full stop to \brief descriptions.

Pick-to: 6.5
Change-Id: I90c67b8c3f3bbe901fa083f781e9056da7763671
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

examples/quick/embeddedinwidgets/doc/src/embeddedinwidgets.qdoc

@@ -4,7 +4,7 @@
     \title Qt Quick Examples - Embedded in Widgets
     \example embeddedinwidgets
     \image qml-embeddedinwidgets-example.jpg
-    \brief Demonstrates embedding a QQuickWindow into a QWidget UI via QWidget::createWindowContainer()
+    \brief Demonstrates embedding a QQuickWindow into a QWidget UI via QWidget::createWindowContainer().
     \ingroup qtquickexamples
 
     This example demonstrates one of the approaches to adding Qt Quick content

examples/quick/multieffect/itemswitcher/doc/src/itemswitcher.qdoc

@@ -4,7 +4,7 @@
     \title Qt Quick Examples - MultiEffect Item Switcher
     \example multieffect/itemswitcher
     \image qml-multieffectitemswitcher-example.jpg
-    \brief Demonstrates using MultiEffect
+    \brief Demonstrates MultiEffect usage.
     \ingroup qtquickexamples
 
     This example demonstrates advanced usage of the MultiEffect type, which

examples/quick/multieffect/testbed/doc/src/testbed.qdoc

@@ -4,7 +4,7 @@
     \title Qt Quick Examples - MultiEffect Test Bed
     \example multieffect/testbed
     \image qml-multieffecttestbed-example.jpg
-    \brief Demonstrates using MultiEffect
+    \brief Demonstrates MultiEffect usage.
     \ingroup qtquickexamples
 
     This example demonstrates the MultiEffect type, which offers a simple,

examples/quickcontrols/chattutorial/doc/src/qtquickcontrols-chattutorial.qdoc

@@ -195,9 +195,6 @@ Now we can build and run the application:
 
 \borderedimage qtquickcontrols-chattutorial-chapter1.png
 
-\noautolist
-\generatelist examplefiles .*chapter1.*
-
 \section1 Chapter 2: Lists
 
 In this chapter, we'll explain how to create a list of interactive items using
@@ -272,8 +269,6 @@ vertical space.
 
 \borderedimage qtquickcontrols-chattutorial-chapter2.png
 
-\generatelist examplefiles .*(chapter2|shared).*
-\generatelist exampleimages .*shared.*(Einstein|Hemingway|Gude)\.png
 
 \section1 Chapter 3: Navigation
 
@@ -499,8 +494,6 @@ Finally, the button is only enabled when there is actually a message to send.
 
 \borderedimage qtquickcontrols-chattutorial-chapter3.gif
 
-\generatelist examplefiles .*(chapter3|shared).*
-\generatelist exampleimages .*shared.*(Einstein|Hemingway|Gude)\.png
 
 \section1 Chapter 4: Models
 
@@ -718,8 +711,6 @@ text field to make way for future input.
 
 \borderedimage qtquickcontrols-chattutorial-chapter4.gif
 
-\generatelist examplefiles .*(chapter4|shared).*
-\generatelist exampleimages
 
 \section1 Chapter 5: Styling
 
@@ -848,8 +839,6 @@ After building and running the application, you should see these results:
 \borderedimage qtquickcontrols-chattutorial-chapter5-contacts-universal-dark.png
 \borderedimage qtquickcontrols-chattutorial-chapter5-conversations-universal-dark.png
 
-\generatelist examplefiles .*(chapter5|shared).*
-\generatelist exampleimages
 
 \section1 Summary
 

src/qml/doc/src/cppintegration/extending-tutorial.qdoc

@@ -162,10 +162,6 @@ Now we can build and run the application:
       cannot update the binding if the \c name value changes. This is addressed in
       the following chapters.
 
-The source code from the following files are referred to in this chapter:
-\noautolist
-\generatelist examplefiles .*chapter1.*
-
 \section1 Chapter 2: Connecting to C++ Methods and Signals
 \c extending-qml/chapter2-methods
 
@@ -205,8 +201,6 @@ disappears, and the application outputs:
     qml: The chart has been cleared
 \endcode
 
-The source code from the following files are referred to in this chapter:
-\generatelist examplefiles .*chapter2.*
 
 \section1 Chapter 3: Adding Property Bindings
 \c extending-qml/chapter3-bindings
@@ -256,8 +250,6 @@ automatically updated and cannot be used as flexibly in QML. Also, since
 bindings are invoked so often and relied upon in QML usage, users of your
 custom QML types may see unexpected behavior if bindings are not implemented.
 
-The source code from the following files are referred to in this chapter:
-\generatelist examplefiles .*chapter3.*
 
 \section1 Chapter 4: Using Custom Property Types
 
@@ -346,8 +338,6 @@ Using CMake:
 \snippet tutorials/extending-qml/chapter4-customPropertyTypes/CMakeLists.txt 1
 \dots
 
-The source code from the following files are referred to in this chapter:
-\generatelist examplefiles .*chapter4.*
 
 \section1 Chapter 5: Using List Property Types
 \c extending-qml/chapter5-listproperties
@@ -391,8 +381,6 @@ The \c PieSlice class has also been modified to include \c fromAngle and \c angl
 properties and to draw the slice according to these values. This is a straightforward
 modification if you have read the previous pages in this tutorial, so the code is not shown here.
 
-The source code from the following files are referred to in this chapter:
-\generatelist examplefiles .*chapter5.*
 
 \section1 Chapter 6: Writing an Extension Plugin
 
@@ -467,8 +455,6 @@ setting the import path to the current directory so that it finds the \c qmldir
 The module "Charts" will be loaded by the QML engine, and the types provided by that
 module will be available for use in any QML document which imports it.
 
-The source code from the following files are referred to in this chapter:
-\generatelist examplefiles .*chapter6.*
 
 \section1 Chapter 7: Summary