Fix the detection of cpu vs gpu in the tutorial.

doc/tutorial/printing_drawing.txt

@@ -57,10 +57,10 @@ The following output depicts the pre- and post- compilation graphs.
     predict = theano.function(inputs=[x], outputs=prediction,
                 name="predict")
 
-    if any( [x.op.__class__.__name__=='Gemv' for x in
+    if any([x.op.__class__.__name__ in ['Gemv', 'CGemv'] for x in
             train.maker.fgraph.toposort()]):
         print 'Used the cpu'
-    elif any( [x.op.__class__.__name__=='GpuGemm' for x in
+    elif any([x.op.__class__.__name__ == 'GpuGemm' for x in
              train.maker.fgraph.toposort()]):
         print 'Used the gpu'
     else: