More minor doc fixes.

- Missing enums
- Misspelt \fn etc
- Missing QSoundEffect C++ docs
- A few typos etc

Change-Id: I3418e79b5d50a7ab86e54d79676c33d06954bef5
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>

src/imports/multimedia/qdeclarativecamera.cpp

@@ -93,7 +93,7 @@ void QDeclarativeCamera::_q_updateState(QCamera::State state)
 
         flash.mode: Camera.FlashRedEyeReduction
 
-        onImageCaptured : {
+        onImageCaptured: {
             photoPreview.source = preview  // Show the preview in an Image element
         }
     }
@@ -114,6 +114,7 @@ void QDeclarativeCamera::_q_updateState(QCamera::State state)
 
 /*!
     \class QDeclarativeCamera
+    \internal
     \brief The QDeclarativeCamera class provides a camera item that you can add to a QDeclarativeView.
 */
 

src/imports/multimedia/qdeclarativecamerafocus.cpp

@@ -72,6 +72,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \class QDeclarativeCameraFocus
+    \internal
     \brief The CameraFocus element provides interface for focus related camera settings.
 */