Fixed incorrect method signatures in 7.1 change notes

Documentation/Doxygen/ChangesVTK-7-1.md

@@ -43,10 +43,10 @@ The following new methods were added:
 
     int Update(int port, vtkInformationVector* requests);
     int Update(vtkInformation* requests);
-    int UpdatePiece(int piece, int numPieces, int ghostLevels, int* extents=0);
-    int UpdateExtent(int piece, int numPieces, int ghostLevels, int* extents=0);
+    int UpdatePiece(int piece, int numPieces, int ghostLevels, const int extents[6]=0);
+    int UpdateExtent(const int extents[6]=0);
     int UpdateTimeStep(double time,
-        int piece=-1, int numPieces=1, int ghostLevels=0, int* extents=0);
+        int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=0);
 
 ### vtkStreamingDemandDrivenPipeline: