Python docstrings support

[artoriusss]

Hello!
Thank you for the work you've put into these themes.

Could you please fix the support of docstrings in python? For now, multiline chunks of text wrapped in triple quotes that go exactly after a python function definition are failed to be highlighted as strings:

However, if we add some code right between the docstring and the beginning of the function, the docstring is highlighted correctly:

This behaviour occurs in all of the xcode themes.

I would be immensely grateful if you fix this issue. Thank you!