Improve README

README.md

@@ -27,6 +27,7 @@ Features at a glance:
 - Supports forbidding/allowing info hashes
 - Built-in TLS support (no reverse proxy needed)
 - Automated CI testing of full file transfers
+- Prometheus metrics
 
 Known users:
 
@@ -192,10 +193,9 @@ This is the most mature of the implementations. I consider it ready for producti
 
 #### io_uring
 
-An experimental io_uring backend can be enabled by passing the `io-uring`
-feature when compilinig. Currently, Linux 6.0 or later is required. The
-application will attempt to fall back to the [mio] backend if your kernel is
-not supported.
+An experimental io_uring backend is available. It currently requires Linux
+6.0 or later and will attempt to fall back to the [mio] backend if run with
+older kernels. To enable it, pass the `io-uring` feature when compiling:
 
 ```sh
 cargo build --release -p aquatic_udp --features "io-uring"
@@ -205,7 +205,9 @@ cargo build --release -p aquatic_udp --features "io-uring"
 
 ![UDP BitTorrent tracker throughput comparison](./documents/aquatic-udp-load-test-illustration-2023-01-11.png)
 
-More details are available [here](./documents/aquatic-udp-load-test-2023-01-11.pdf). The mio backend was used.
+The mio backend was used. More details are available [here](./documents/aquatic-udp-load-test-2023-01-11.pdf).
+
+---
 
 ### aquatic_http: HTTP BitTorrent tracker
 
@@ -237,6 +239,8 @@ without knowing the exact setup.
 
 More details are available [here](./documents/aquatic-http-load-test-2023-01-25.pdf).
 
+---
+
 ### aquatic_ws: WebTorrent tracker
 
 Aims for compatibility with [WebTorrent](https://github.com/webtorrent)