Bug 1588523 - Document the autofix when existing r=ahal

Depends on D49161

Differential Revision: https://phabricator.services.mozilla.com/D49162

--HG--
extra : moz-landing-system : lando

tools/lint/docs/linters/eslint.rst

@@ -28,6 +28,12 @@ overridden by including an ``.eslintrc`` in the appropriate subdirectory. For an
 supported configuration, see `ESLint's documentation`_.
 
 
+Autofix
+-------
+
+The eslint linter provides a ``--fix`` option. It is based on the upstream option.
+
+
 ESLint Plugin Mozilla
 ---------------------
 

tools/lint/docs/linters/flake8.rst

@@ -42,9 +42,16 @@ be re-defined.
 
 For an overview of the supported configuration, see `flake8's documentation`_.
 
+Autofix
+-------
+
+The flake8 linter provides a ``--fix`` option. It is based on `autopep8`_.
+Please note that autopep8 does NOT fix all issues reported by flake8.
+
 .. _Flake8: https://flake8.readthedocs.io/en/latest/
 .. _pep8: http://pep8.readthedocs.io/en/latest/
 .. _pyflakes: https://github.com/pyflakes/pyflakes
 .. _mccabe: https://github.com/pycqa/mccabe
 .. _bug 1277851: https://bugzilla.mozilla.org/show_bug.cgi?id=1277851
 .. _flake8's documentation: https://flake8.readthedocs.io/en/latest/config.html
+.. _autopep8: https://github.com/hhatto/autopep8