Update getting-started.md

Author: LiamConnors

doc/python/getting-started.md

@@ -66,14 +66,15 @@ or `conda`:
 ```
 $ conda install -c plotly plotly=5.24.1
 ```
-This package contains everything you need to write figures to standalone HTML files.
 
-```python
-import plotly.express as px
-fig = px.bar(x=["a", "b", "c"], y=[1, 3, 2])
-fig.write_html('first_figure.html', auto_open=True)
+If you want to use Plotly Express, install its required dependencies with:
+
+```
+pip install plotly[express]==5.24.1
 ```
 
+You'll also need to install a [supported dataframe library](/python/px-arguments#supported-dataFrame-types).
+
 ### Plotly charts in Dash
 
 [Dash](https://plotly.com/dash/) is the best way to build analytical apps in Python using Plotly figures. To run the app below, run `pip install dash`, click "Download" to get the code and run `python app.py`.