Tweak doc8 config to allow for longer maximum line length in Sphinx documentation *.rst files

Author: tleonhardt

setup.cfg

@@ -13,5 +13,5 @@ use_parentheses = true
 
 [doc8]
 ignore-path=docs/_build,.git,.idea,.pytest_cache,.tox,.venv,.vscode,build,cmd2,examples,tests,cmd2.egg-info,dist,htmlcov,__pycache__,*.egg
-;max-line-length=99
+max-line-length=117
 verbose=0