Fix release workflow

Author: dolfinus

README.rst

@@ -135,8 +135,7 @@ And now version is based on git tag:
 Just add ``setuptools-git-versioning`` to ``setup_requires`` argument of ``setuptools.setup`` function call,
 and then add new argument ``setuptools_git_versioning`` with config options:
 
-.. code-block:: python
-    :caption: setup.py
+.. code:: python
 
     import setuptools