Deployment guide stack name recommendation should state max 53 char instead of 54

[ajoga]

Hi,

An AWS::AppConfig::Application's name can be of maximum 64 chars.

It's currently defined like this:

dynatrace-aws-s3-log-forwarder/template.yaml

Lines 412 to 416 in 4f00665

	AppConfigApplication:
	Type: AWS::AppConfig::Application
	Properties:
	Description: "dynatrace-aws-s3-log-forwarder application configuration"
	Name: !Sub ${AWS::StackName}-app-config

Deployment doc states:

dynatrace-aws-s3-log-forwarder/docs/deployment_guide.md

Line 37 in 4f00665

> Your stack name should have a maximum of 54 characters, otherwise deployment will fail.

The -app-config suffix is 11 chars long, add the 54 chars of the stack name and we get 65 chars, so the deployment fails

I can confirm the deployments of v0.6.2 succeeds with 53 chars