Installation Demo seems out of date

[AdamLenda]

aws cloudformation create-stack \
	--capabilities CAPABILITY_IAM \
	--stack-name cfn-secret-provider \
	--template-body file://cloudformation/cfn-resource-provider.json

fails with:

An error occurred (ValidationError) when calling the CreateStack operation: Template format error: unsupported structure.

I checked the folder and found it is a Yaml file, so made that change and it worked:

aws cloudformation create-stack \
	--capabilities CAPABILITY_IAM \
	--stack-name cfn-secret-provider \
	--template-body file://cloudformation/cfn-resource-provider.yaml