test: rewrite test for _Body.add_paragraph()
test: rewrite test for _Body.add_paragraph()

guilhermebr/python-docx,SimplyAgree/python-docx,jean/python-docx,mohamedattahri/python-docx,holli-holzer/python-docx,sk1tt1sh/python-docx,tanyunshi/python-docx,eruffaldi/python-docx,ludoo/python-docx,yurac/python-docx,python-openxml/python-docx,Nuos/python-docx