update media file terms (#3851)

Author: brmur

javascriptv3/example_code/dynamodb/README.md

@@ -2,7 +2,8 @@
 The code examples in this directory demonstrate how to work with Amazon DynamoDB using the AWS SDK for JavaScript version 3 (v3).
 
 Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. You can use Amazon DynamoDB to create a database table that can store and retrieve any amount of data, and serve any level of request traffic. Amazon DynamoDB automatically spreads the data and traffic for the table over a sufficient number of servers to handle the request capacity specified by the customer and the amount of data stored, while maintaining consistent and fast performance.
-###Table of contents
+
+## Table of contents
 - [Important information](#-important-information)
 - [Code examples](#code-examples)
   - [Single actions](#single-actions)