Add a note to the contributing file about docs_requirements.txt
Add a note to the contributing file about docs_requirements.txt

bjodah/PyLaTeX,JelteF/PyLaTeX,sebastianhaas/PyLaTeX,jendas1/PyLaTeX,sebastianhaas/PyLaTeX,jendas1/PyLaTeX,votti/PyLaTeX,ovaskevich/PyLaTeX,bjodah/PyLaTeX,ovaskevich/PyLaTeX,votti/PyLaTeX,JelteF/PyLaTeX