add anywidget

Author: LiamConnors

doc/python/v6-changes.md

@@ -47,9 +47,13 @@ pip install notebook --upgrade
 
 ## Change to anywidget for go.FigureWidget
 
-[go.FigureWidget](https://plotly.com/python/figurewidget/) now uses [anywidget](https://anywidget.dev/). Install `anywidget` to 
+[go.FigureWidget](https://plotly.com/python/figurewidget/) now uses [anywidget](https://anywidget.dev/). Install `anywidget` with:
 
 
+```python
+pip install anywidget
+```
+
 ## Processing NumPy and Pandas Series
 
 Plotly.py now takes advantage of recent changes in how Plotly.js handles typed arrays for improved performance. See the [performance page](python/performance/) for more details.