Fix typo in docs/index.md (#2665)

Author: logan2d5

docs/index.md

@@ -46,7 +46,7 @@ Python 3.8+
 $ pip3 install starlette
 ```
 
-You'll also want to install an ASGI server, such as [uvicorn](http://www.uvicorn.org/), [daphne](https://github.com/django/daphne/), or [hypercorn](https://hypercorn.readthedocs.io/en/latest/).
+You'll also want to install an ASGI server, such as [uvicorn](https://www.uvicorn.org/), [daphne](https://github.com/django/daphne/), or [hypercorn](https://hypercorn.readthedocs.io/en/latest/).
 
 ```shell
 $ pip3 install uvicorn