docs: add blog post in the readme

Author: heitorlessa

Diff for: README.md

@@ -5,7 +5,7 @@
 
 A suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously easier.
 
-**[📜Documentation](https://awslabs.github.io/aws-lambda-powertools-python/)** | **[API Docs](https://awslabs.github.io/aws-lambda-powertools-python/api/)** | **[🐍PyPi](https://pypi.org/project/aws-lambda-powertools/)** | **[Feature request](https://github.com/awslabs/aws-lambda-powertools-python/issues/new?assignees=&labels=feature-request%2C+triage&template=feature_request.md&title=)** | **[🐛Bug Report](https://github.com/awslabs/aws-lambda-powertools-python/issues/new?assignees=&labels=bug%2C+triage&template=bug_report.md&title=)** | **[Kitchen sink example](https://github.com/awslabs/aws-lambda-powertools-python/tree/develop/example)**
+**[📜Documentation](https://awslabs.github.io/aws-lambda-powertools-python/)** | **[API Docs](https://awslabs.github.io/aws-lambda-powertools-python/api/)** | **[🐍PyPi](https://pypi.org/project/aws-lambda-powertools/)** | **[Feature request](https://github.com/awslabs/aws-lambda-powertools-python/issues/new?assignees=&labels=feature-request%2C+triage&template=feature_request.md&title=)** | **[🐛Bug Report](https://github.com/awslabs/aws-lambda-powertools-python/issues/new?assignees=&labels=bug%2C+triage&template=bug_report.md&title=)** | **[Kitchen sink example](https://github.com/awslabs/aws-lambda-powertools-python/tree/develop/example)** | **[Detailed blog post](https://aws.amazon.com/blogs/opensource/simplifying-serverless-best-practices-with-lambda-powertools/)**
 
 ## Features