docs: Update typos in aws-python-scheduled-cron example (#623)

Author: hrchu

aws-python-scheduled-cron/README.md

@@ -16,7 +16,7 @@ This template demonstrates how to develop and deploy a simple cron-like service
 
 ## Schedule event type
 
-This examples defines two functions, `cron` and `secondCron`, both of which are triggered by an event of `schedule` type, which is used for configuring functions to be executed at specific time or in specific intervals. For detailed information about `schedule` event, please refer to corresponding section of Serverless [docs](https://serverless.com/framework/docs/providers/aws/events/schedule/).
+This examples defines two functions, `rateHandler` and `cronHandler`, both of which are triggered by an event of `schedule` type, which is used for configuring functions to be executed at specific time or in specific intervals. For detailed information about `schedule` event, please refer to corresponding section of Serverless [docs](https://serverless.com/framework/docs/providers/aws/events/schedule/).
 
 When defining `schedule` events, we need to use `rate` or `cron` expression syntax.