Fix CUTLASS Python documentation build (codeplaysoftware#91)

Modify problematic docstring and instructions to fix build of CUTLASS
Python documentation.

- Docstring: missing newline starting code-block and wrong keyword
- `ipykernel` missing lead to error on Jupyter notebooks
- `docutils>=0.21` drops a member Sphinx is using. Next versions of
  Sphinx will fix this by dropping the usage.

Signed-off-by: Víctor Pérez <[email protected]>

python/README.md

@@ -152,6 +152,10 @@ Building the documentation requires additional packages.  The following commands
 ```bash
 sudo apt-get install pandoc
 pip install --upgrade Sphinx furo pandoc myst-parser sphinx-copybutton nbsphinx nbsphinx-link sphinx-inline-tabs
+# Needed for jupyter notebooks
+pip install ipykernel
+# Needed as latest versions are not compatible with Sphinx as of now.
+pip install docutils~=0.20.0
 ```
 
 To build documentation, you must first have installed the CUTLASS Python interface via the

python/cutlass/epilogue/epilogue.py

@@ -122,8 +122,9 @@ def trace(fn, example_tensors, **kwargs):
     :param example_tensors: example inputs for fn
     :type example_tensors: dict
 
-    .. hightlight:: python
+    .. highlight:: python
     .. code-block:: python
+
         import cutlass.backend.evt
 
         # Define epilogue function as Python callable