Add comments to yaml example file calling out the patterns

Author: NiltiakSivad

modules/openapi-generator/src/test/resources/3_0/typescript-axios/with-aws-iam.yaml

@@ -4,6 +4,7 @@ info:
   version: 1.0.0
   description: Test API for AWS IAM authentication detection
 servers:
+   # Pattern 3 Check for AWS API Gateway URL patterns in servers
   - url: https://abc123.execute-api.us-east-1.amazonaws.com/prod
 security:
   - iam: []
@@ -61,10 +62,12 @@ paths:
                   format: int32
 components:
   securitySchemes:
+    # Pattern 2: Check for common AWS V4 signature scheme names
     iam:
       type: apiKey
       name: Authorization
       in: header
+      # Pattern 1: Check for AWS-specific extension
       x-amazon-apigateway-authtype: awsSigv4
   schemas:
     Pet: