[AWS::BedrockAgentCore::GatewayTarget] - [Docs] - SchemaDefinition Required with wrong description

### Name of the resource

Other

### Resource name

AWS::BedrockAgentCore::GatewayTarget

### Reference Link

https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-bedrockagentcore-gatewaytarget-schemadefinition.html

### Details

Currently states

> Required
>
> The schema definition.

We are on the SchemaDefinition page. **Everything** is "The schema definition."

API docs say "The required fields in the schema definition. These fields must be provided when using the schema."

Start with the linked AWS CloudFormation SchemaDefinition reference page and compare its current description with the API wording quoted in the issue. Done means the SchemaDefinition description explains that it contains the required fields and matches the API documentation.

Written by the indexing model from the issue text.