Defer Python tool mentions to python-novice-gapminder

Companion to swcarpentry/python-novice-gapminder#453

_episodes/09-conflict.md

@@ -325,7 +325,7 @@ Conflicts can also be minimized with project management strategies:
 - If the conflicts are stylistic churn (e.g. tabs vs. spaces), establish a
   project convention that is governing, use code style tools (e.g.
   `styleR` or `Code > Reformat` in RStudio,
-  or [`pep8` in Python](https://swcarpentry.github.io/python-novice-gapminder/18-style/index.html#follow-standard-python-style-in-your-code),
+  or [the tools listed in our Python lesson](https://swcarpentry.github.io/python-novice-gapminder/18-style/index.html#follow-standard-python-style-in-your-code),
   [ShellCheck(.net)](http://swcarpentry.github.io/shell-novice/guide/#teaching-notes),
   etc.) and note this in your project's relevant documentation or ReadMe file.