Doc: make example briefs more consistent

Make clear that all current examples illustrate how
to use component scripts.

Change-Id: Id1015912723ed2f8f982d8316c8923e47e4897bc
Reviewed-by: Jarek Kobus <jaroslaw.kobus@theqtcompany.com>

doc/installerfw-examples.qdoc

@@ -33,4 +33,7 @@
     \title Qt Installer Framework Examples
     \brief Illustrate how to customize installers.
 
+    These examples illustrate how to use component scripts for customizing
+    installers.
+
 */

examples/doc/changeuserinterface.qdoc

@@ -30,7 +30,7 @@
     \ingroup qtifwexamples
     \title Change Installer UI Example
 
-    \brief Changing the installer UI by using a component script.
+    \brief Using a component script to modify the installer UI.
 
     \image qtifw-examples-changeuserinterface.png
 

examples/doc/componenterror.qdoc

@@ -30,7 +30,8 @@
     \ingroup qtifwexamples
     \title Component Error Example
 
-    \brief Stopping the installation if the components cannot be installed.
+    \brief Using a component script to stop the installation if the components
+    cannot be installed.
 
     \image qtifw-examples-componenterror.png
 

examples/doc/dynamicpage.qdoc

@@ -30,7 +30,7 @@
     \ingroup qtifwexamples
     \title Dynamic Page Installer Example
 
-    \brief Building an installer by using a script and dynamic pages.
+    \brief Using a component script and dynamic pages to build an installer.
 
     \image qtifw-examples-dynamicpages.png
 

examples/doc/modifyextract.qdoc

@@ -30,7 +30,8 @@
     \ingroup qtifwexamples
     \title Modify Extract Installer Example
 
-    \brief Using the extract archive hook to modify the target path.
+    \brief Using the extract archive hook in a component script to modify the
+    target path.
 
     \image qtifw-examples-modifyextract.png
 

examples/doc/openreadme.qdoc

@@ -30,8 +30,8 @@
     \ingroup qtifwexamples
     \title Open ReadMe Example
 
-    \brief Adding a check box for opening the readme file to the final
+    \brief Using a component script to add a check box for opening the readme
-    installer page.
+    file to the final installer page.
 
     \image qtifw-examples-openreadme.png
 

examples/doc/quit_installer.qdoc

@@ -32,7 +32,7 @@
 
     \image qtifw-examples-quit_installer.png
 
-    \brief Quitting an installer by using a script.
+    \brief Using a component script to quit an installer.
 
     \e{Quit Installer} illustrates how to use the \c Component() function to
     display a message box to end users for quitting the installation if some

examples/doc/registerfileextension.qdoc

@@ -30,7 +30,7 @@
     \ingroup qtifwexamples
     \title Register File Extension Example
 
-    \brief Registering a filename extension on Windows.
+    \brief Using a component script to register a filename extension on Windows.
 
     \image qtifw-examples-registerfileextension.png
 

examples/doc/startmenu.qdoc

@@ -30,7 +30,7 @@
     \ingroup qtifwexamples
     \title Start Menu Shortcut Example
 
-    \brief Adding an entry to the Windows Start menu.
+    \brief Using a component script to add an entry to the Windows Start menu.
 
     \image qtifw-examples-startmenu.png
 

examples/doc/systeminfo.qdoc

@@ -30,7 +30,8 @@
     \ingroup qtifwexamples
     \title System Information Example
 
-    \brief Checking operating system version and bitness in a script.
+    \brief Using the systemInfo API in a component script to check operating
+    system version and bitness.
 
     The \e{System Information Example} demonstrates how to use the \l{systemInfo} API to detect
     details about the target operating system.