update starting point text

Author: LiamConnors

doc/python/performance.md

@@ -194,7 +194,7 @@ fig.show()
 
 #### WebGL with 1,000,000 points with Graph Objects
 
-If Plotly Express does not provide a good starting point, it is also possible to use [the more generic `go.Scattergl` class from `plotly.graph_objects`](/python/graph-objects/).
+If Plotly Express does not provide a good starting point for creating a chart, you can use [the more generic `go.Scattergl` class from `plotly.graph_objects`](/python/graph-objects/).
 
 ```python
 import plotly.graph_objects as go