DOC mention pycodestyle instead of pep8 (#677)

bganglia · web-flow · commit 459dd231da6b · 2020-01-31T17:23:27.000+01:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -108,8 +108,8 @@ tools:
 
 -  No PEP8 warnings, check with:
 
-        $ pip install pep8
-        $ pep8 path/to/module.py
+        $ pip install pycodestyle
+        $ pycodestyle path/to/module.py
 
 -  AutoPEP8 can help you fix some of the easy redundant errors:
 
