API-Documentation: Add the Utils-library.

Fix API after doc template change.

src/libs/utils/filewizarddialog.cpp

@@ -36,6 +36,13 @@
 
 #include <QtGui/QAbstractButton>
 
+/*!
+  \class Utils::FileWizardDialog
+
+  \brief Standard wizard for a single file letting the user choose name
+   and path. Custom pages can be added via Core::IWizardExtension.
+*/
+
 namespace Utils {
 
 FileWizardDialog::FileWizardDialog(QWidget *parent) :