docs: fixed more typos, correct index reference to new util

Author: Tom McCarthy

docs/content/index.mdx

@@ -30,7 +30,7 @@ sam init --location https://github.com/aws-samples/cookiecutter-aws-sam-python
 * [Bring your own middleware](./utilities/middleware_factory) - Decorator factory to create your own middleware to run logic before, and after each Lambda invocation
 * [Parameters utility](./utilities/parameters) - Retrieve parameter values from AWS Systems Manager Parameter Store, AWS Secrets Manager, or Amazon DynamoDB, and cache them for a specific amount of time
 * [Batch utility](./utilities/batch) - Batch processing for AWS SQS, handles partial failure.
-* [Event source data classes](./utilities/data_classes) - Batch processing for AWS SQS, handles partial failure.
+* [Event source data classes utility](./utilities/data_classes) - Data classes describing the schema of common Lambda event triggers.
 
 ### Lambda Layer
 

docs/content/utilities/data_classes.mdx

@@ -5,7 +5,7 @@ description: Utility
 
 import Note from "../../src/components/Note"
 
-The event source data classes utility provides classes describing the schema of common trigger Lambda events triggers.
+The event source data classes utility provides classes describing the schema of common Lambda events triggers.
 
 **Key Features**