AWS::CodeBuild::Project - PullRequestBuildPolicy

### Name of the resource

AWS::CodeBuild::Project

### Resource name

_No response_

### Description

This doc says it is supported: https://docs.aws.amazon.com/codebuild/latest/userguide/pull-request-build-policy.html

This doc does not have it listed as an option: https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-codebuild-project-projecttriggers.html

### Other Details

_No response_

Compare the AWS CodeBuild pull-request build policy documentation with the AWS::CloudFormation::ProjectTriggers reference linked in the issue. Confirm whether PullRequestBuildPolicy is supported, then update the relevant resource documentation or clarify the discrepancy; done means the two references consistently describe the available option.

Written by the indexing model from the issue text.