Add discord to README (#2718)

Author: Kludex

README.md

@@ -11,8 +11,12 @@
 [![Build Status](https://github.com/Kludex/uvicorn/workflows/Test%20Suite/badge.svg)](https://github.com/Kludex/uvicorn/actions)
 [![Package version](https://badge.fury.io/py/uvicorn.svg)](https://pypi.python.org/pypi/uvicorn)
 [![Supported Python Version](https://img.shields.io/pypi/pyversions/uvicorn.svg?color=%2334D058)](https://pypi.org/project/uvicorn)
+[![Discord](https://img.shields.io/discord/1051468649518616576?logo=discord&logoColor=ffffff&color=7389D8&labelColor=6A7EC2)](https://discord.gg/RxKUF5JuHs)
+
+---
 
 **Documentation**: [https://uvicorn.dev](https://uvicorn.dev)
+
 **Source Code**: [https://www.github.com/Kludex/uvicorn](https://www.github.com/Kludex/uvicorn)
 
 ---

docs/index.md

@@ -30,7 +30,8 @@
 
 ---
 
-**Documentation**: [https://uvicorn.dev](https://uvicorn.dev)<br>
+**Documentation**: [https://uvicorn.dev](https://uvicorn.dev)
+
 **Source Code**: [https://www.github.com/Kludex/uvicorn](https://www.github.com/Kludex/uvicorn)
 
 ---