text: Title: NegativeSampling docs typo
  Body: ### 📚 Describe the documentation issue
  
  `src_weight` is listed twice, but the second one should be `dst_weight` 
  ```python
      r"""The negative sampling configuration of a
      :class:`~torch_geometric.sampler.BaseSampler` when calling
      :meth:`~torch_geometric.sampler.BaseSampler.sample_from_edges`.
  
      Args:
          mode (str): The negative sampling mode
              (:obj:`"binary"` or :obj:`"triplet"`).
              If set to :obj:`"binary"`, will randomly sample negative links
              from the graph.
              If set to :obj:`"triplet"`, will randomly sample negative
              destination nodes for each positive source node.
          amount (int or float, optional): The ratio of sampled negative edges to
              the number of positive edges. (default: :obj:`1`)
          src_weight (torch.Tensor, optional): A node-level vector determining
              the sampling of source nodes. Does not necessarily need to sum up
              to one. If not given, negative nodes will be sampled uniformly.
              (default: :obj:`None`)
          src_weight (torch.Tensor, optional): A node-level vector determining
              the sampling of destination nodes. Does not necessarily need to sum
              up to one. If not given, negative nodes will be sampled uniformly.
              (default: :obj:`None`)
      """
  ```
  
  ### Suggest a potential alternative/fix
  
  _No response_