message: Fix link
  * Fix link
  * fix link to use the "document" syntax.
  the api_guide pages are counted as "documents" not api pages, so they use the document syntax [described here](https://www.tensorflow.org/community/documentation#links_in_markdown).
diff: @@ -699,7 +699,7 @@ def convolution(
  `padded_input` is obtained by zero padding the input using an effective
  spatial filter shape of `(spatial_filter_shape-1) * dilation_rate + 1` and
  output striding `strides` as described in the
  - @{tf.nn.convolution$comment here}.
  + @{$python/nn#Convolution$comment here}.
  In the case that `data_format` does start with `"NC"`, the `input` and output
  (but not the `filter`) are simply transposed as follows:
  