DOC: #1700: classify is misleading

Modules/Applications/AppClassification/include/otbLearningApplicationBase.hxx

@@ -138,7 +138,7 @@ LearningApplicationBase<TInputValue,TOutputValue>
   RGBAPixelConverter<int,int>::Pointer dummyFilter =
     RGBAPixelConverter<int,int>::New();
   dummyFilter->SetProgress(0.0f);
-  this->AddProcess(dummyFilter,"Classify...");
+  this->AddProcess(dummyFilter,"Validation...");
   dummyFilter->InvokeEvent(itk::StartEvent());
 
   // load a machine learning model from file and predict the input sample list