BUG: change the type of a input parameter from input to output

Modules/Applications/AppClassification/app/otbComputeOGRLayersFeaturesStatistics.cxx

@@ -57,7 +57,7 @@ private:
     AddParameter(ParameterType_InputVectorData, "inshp", "Name of the input shapefile");
     SetParameterDescription("inshp","Name of the input shapefile");
 
-    AddParameter(ParameterType_InputFilename, "outstats", "XML file containing mean and variance of each feature.");
+    AddParameter(ParameterType_OutputFilename, "outstats", "XML file containing mean and variance of each feature.");
     SetParameterDescription("outstats", "XML file containing mean and variance of each feature.");
 
     AddParameter(ParameterType_ListView,  "feat", "List of features to consider for statistics.");