minor README tweaks

Author: J Plasmeier

README.md

@@ -14,12 +14,12 @@ Integration tests are included. To test them, certain environment variables need
 
 To create these resources, refer to the included CloudFormation template (cfn/S3EC-GitHub-CF-Template).
 Make sure that the repo in the trust policy of the IAM role refers to your fork instead of the `aws` organization.
-Note that your account may incur charges based on the usage of any resources beyond the AWS Free Tier.
+**NOTE**: Your account may incur charges based on the usage of any resources beyond the AWS Free Tier.
 
 If you have forked this repo, there are additional steps required.
 You will need to configure your fork's Github Actions settings to be able to run CI:
 
-Under Settings -> Actions -> General -> Workflow permissions, ensure Read and write permissions is selected.
+Under Settings -> Actions -> General -> Workflow permissions, ensure "Read and write permissions" is selected.
 Under Settings -> Security -> Secrets and variables -> Actions -> Repository secrets, add new secret:
 
 * `CI_AWS_ACCOUNT_ID` - the AWS account ID which contains the required resources, e.g. 111122223333.