docs(home): fix discord syntax and add Discord badge

Author: heitorlessa

Diff for: README.md

@@ -1,8 +1,9 @@
 # AWS Lambda Powertools for Python
 
-![Build](https://github.com/awslabs/aws-lambda-powertools/workflows/Powertools%20Python/badge.svg?branch=master)
+[![Build](https://github.com/awslabs/aws-lambda-powertools-python/actions/workflows/python_build.yml/badge.svg)](https://github.com/awslabs/aws-lambda-powertools-python/actions/workflows/python_build.yml)
 [![codecov.io](https://codecov.io/github/awslabs/aws-lambda-powertools-python/branch/develop/graphs/badge.svg)](https://app.codecov.io/gh/awslabs/aws-lambda-powertools-python)
 ![PythonSupport](https://img.shields.io/static/v1?label=python&message=3.6%20|%203.7|%203.8|%203.9&color=blue?style=flat-square&logo=python) ![PyPI version](https://badge.fury.io/py/aws-lambda-powertools.svg) ![PyPi monthly downloads](https://img.shields.io/pypi/dm/aws-lambda-powertools)
+[![Join our Discord](https://dcbadge.vercel.app/api/server/B8zZKbbyET)](https://discord.gg/B8zZKbbyET)
 
 A suite of Python utilities for AWS Lambda functions to ease adopting best practices such as tracing, structured logging, custom metrics, and more. (AWS Lambda Powertools [Java](https://github.com/awslabs/aws-lambda-powertools-java) and [Typescript](https://github.com/awslabs/aws-lambda-powertools-typescript) is also available).
 
@@ -46,7 +47,7 @@ With [pip](https://pip.pypa.io/en/latest/index.html) installed, run: ``pip insta
 
 ## Connect
 
-* **AWS Lambda Powertools on Discord**: `#python` - **[Invite link(https://discord.gg/B8zZKbbyET)**
+* **AWS Lambda Powertools on Discord**: `#python` - **[Invite link](https://discord.gg/B8zZKbbyET)**
 * **Email**: [email protected]
 
 ## Security disclosures