fix typo in QCameraImageProcessing documentation

Task-number: QTBUG-55660
Change-Id: I444bef63c0b8d9a9f9fdbce8e3ceabb067c1fe84
Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>
Reviewed-by: Christian Stromme <christian.stromme@qt.io>

src/multimedia/camera/qcameraimageprocessing.cpp

@@ -314,7 +314,7 @@ qreal QCameraImageProcessing::denoisingLevel() const
 /*!
     Sets the denoising adjustment \a level.
 
-    Valid sharpening values range between -1.0 and 1.0, with a default of 0.
+    Valid denoising values range between -1.0 and 1.0, with a default of 0.
 
     If the parameter value is set to 0, the amount of denoising applied
     is selected by camera and depends on camera capabilities and settings.