Update discrete-color.md

Author: nicolaskruchten

doc/python/discrete-color.md

@@ -117,7 +117,7 @@ IFrame(snippet_url + 'discrete-color', width='100%', height=630)
 
 By default, Plotly Express will use the color sequence from the active [template](/python/templates/)'s `layout.colorway` attribute, and the default active template is `plotly` which uses the `plotly` color sequence. You can choose any of the following built-in qualitative color sequences from the `px.colors.qualitative` module, however, or define your own.
 
-```python
+```python hide_code=true
 import plotly.express as px
 
 fig = px.colors.qualitative.swatches()