Fix sphinx warning and better link.

doc/library/sandbox/cuda/dnn.txt

@@ -51,13 +51,13 @@ Convolution Ops
 ===============
 
 .. automodule:: theano.sandbox.cuda.dnn
-    :members: GpuDnnConvDesc, GpuDnnConv, GpuDnnConvGradW, GpuDnnConvGradI,
+    :members: GpuDnnConvDesc, GpuDnnConv, GpuDnnConvGradW, GpuDnnConvGradI
 
 Pooling Ops
 ===========
 
 .. automodule:: theano.sandbox.cuda.dnn
-    :members: GpuDnnPoolDesc, GpuDnnPool, GpuDnnPoolGrad,
+    :members: GpuDnnPoolDesc, GpuDnnPool, GpuDnnPoolGrad
 
 Softmax Ops
 ===========

doc/library/tensor/nnet/conv.txt

@@ -164,7 +164,6 @@ TODO: Give examples on how to use these things! They are pretty complicated.
 
 .. autofunction:: theano.tensor.nnet.conv.conv2d
 .. autofunction:: theano.sandbox.cuda.fftconv.conv2d_fft
-.. autofunction:: theano.sandbox.cuda.dnn.dnn_conv
 .. autofunction:: theano.tensor.nnet.Conv3D.conv3D
 .. autofunction:: theano.sandbox.cuda.fftconv.conv3d_fft
 .. autofunction:: theano.tensor.nnet.conv3d2d.conv3d