Update fern/docs/pages/testing.mdx

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: bc-devrev

fern/docs/pages/testing.mdx

@@ -46,7 +46,7 @@ new work item would send the event to the local server.
 
 If utilizing ngrok, you can access the ngrok UI by opening http://127.0.0.1:4040/ in the browser. This interface offers a neat way to review the list of requests and replay them if necessary.
 
-The service account token included with the request is valid for only 30 minutes. Therefore, attempting to call the DevRev API with that token for events older than this timeframe will result in a '401 Unauthorized' error.
+The service account token included with the request is valid for only 30 minutes. Therefore, attempting to call the DevRev API with that token for events older than this timeframe results in a '401 Unauthorized' error.
 
 ### Update the URL