BasicSR docs

cd docs
make html

- 空行
- :file:`file`, :func:`func`, :class:`class`, :math:`\gamma`
- **粗体**，*斜体*
- ``Paper: title``
- Reference: link

class SPyNetTOF(nn.Module):
    """SPyNet architecture for TOF.

    Note that this implementation is specifically for TOFlow. Please use :file:`spynet_arch.py` for general use.
    They differ in the following aspects:

    1. The basic modules here contain BatchNorm.
    2. Normalization and denormalization are not done here, as they are done in TOFlow.

    ``Paper: Optical Flow Estimation using a Spatial Pyramid Network``

    Reference: https://github.com/Coldog2333/pytoflow

    Args:
        load_path (str): Path for pretrained SPyNet. Default: None.
    """