pyarrow is not needed as an extra wheel

examples/streamlit/README.md

@@ -2,7 +2,7 @@
 
 This is an example on how to deploy a streamlit app using `pynsist`. The example also includes the required packages to run plotly inside the app.
 
-The extra wheels of the packages `blinker` and `pyarrow` are required (can't be found on Pypi).
+The extra wheels of the package `blinker`is required (can't be found on Pypi).
 
 [Here](https://stackoverflow.com/questions/69352179/package-streamlit-app-and-run-executable-on-windows/69621578#69621578) you can find additional information on why the `src/run_app.py` has the chosen structure.