Merge pull request #12443 from KevinGG/whitespace

Remove trailing whitespace from README
diff --git a/sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/README.md b/sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/README.md
index f0e9fb4..f87765a 100644
--- a/sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/README.md
+++ b/sdks/python/apache_beam/runners/interactive/extensions/apache-beam-jupyterlab-sidepanel/README.md
@@ -80,7 +80,7 @@
 
 This project uses `ts-jest` to test all ts/tsx files under `src/__tests__` directory.
 
-To run a single test, find out the name of a test in the source code that looks like: 
+To run a single test, find out the name of a test in the source code that looks like:
 
 ```javascript
 it('does ABC', () => {...})