Small update to CONTRIBUTING.md (#296)

felixdivo · web-flow · commit ce512a4719f8 · 2020-12-07T11:09:00.000+01:00
* small update to CONTRIBUTING.md

* revert accidental change to the header
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -120,8 +120,8 @@ tools:
 -  No PEP8 warnings, check with:
 
   ```bash
-  $ 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:
