[Conv2DTransposed] Fix wrong shape check

The default shape format of TVM is `N x Cx iH x iW` for input and `O x I x kH x kW` for weight, a proper shape for Conv2dTransposed should 

* input: (batch, in_channels, iH, iW)
* weight: (out_channels, in_channels // groups, kH, kW)

Thus the original checking
```
ICHECK(reporter->AssertEQ(indexdiv(dshape_nchw[1], param->groups), wshape[0]));
```  
is wrong. The proper comparison dimension should be `wshape[1]` rather than `wshape[0]`.

Besides, the name for debug is also not correct. All logging information are using `conv2d` rather than `conv2d_transposed`, which is confusing.

src/relay/op/nn/convolution.h

@@ -1099,16 +1099,20 @@ bool Conv2DTransposeRel(const Array<Type>& types, int num_inputs, const Attrs& a
       // check the size
       ICHECK(reporter->AssertEQ(param->kernel_size[0], wshape[2]) &&
              reporter->AssertEQ(param->kernel_size[1], wshape[3]))
-          << "Conv2D: shape of weight is inconsistent with kernel_size, "
+          << "Conv2DTransposed: shape of weight is inconsistent with kernel_size, "
           << " kernel_size=" << param->kernel_size << " wshape=" << Array<IndexExpr>(wshape);
     }
     if (param->channels.defined()) {
       ICHECK(reporter->AssertEQ(param->channels, wshape[1]))
-          << "Conv2D: shape of weight is inconsistent with channels, "
+          << "Conv2DTransposed: shape of weight is inconsistent with channels, "
           << " channels=" << param->channels << " wshape=" << Array<IndexExpr>(wshape);
     }
     if (!dshape_nchw[1].as<tir::AnyNode>() && !wshape[0].as<tir::AnyNode>()) {
-      ICHECK(reporter->AssertEQ(indexdiv(dshape_nchw[1], param->groups), wshape[0]));
+      ICHECK(reporter->AssertEQ(indexdiv(dshape_nchw[1], param->groups), wshape[1]))
+          << "Conv2DTransposed: data.shape[1] // groups != weight.shape[1], "
+          << " data.shape= " << Array<IndexExpr>(dshape_nchw)
+          << " groups= " << param->groups 
+          << " weight.shape= " << Array<IndexExpr>(wshape);
     }
     channels = wshape[1];
     dilated_ksize_y = 1 + (wshape[2] - 1) * param->dilation[0];