docs: minor badges updates [skip ci]

README.md

@@ -1,4 +1,4 @@
-# Static Web Server [![CI](https://github.com/joseluisq/static-web-server/workflows/CI/badge.svg)](https://github.com/joseluisq/static-web-server/actions?query=workflow%3ACI) [![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/joseluisq/static-web-server/1)](https://hub.docker.com/r/joseluisq/static-web-server/) [![Docker Image Size (tag)](https://img.shields.io/docker/image-size/joseluisq/static-web-server/1)](https://hub.docker.com/r/joseluisq/static-web-server/tags) [![Docker Image](https://img.shields.io/docker/pulls/joseluisq/static-web-server.svg)](https://hub.docker.com/r/joseluisq/static-web-server/)
+# Static Web Server [![CI](https://github.com/joseluisq/static-web-server/workflows/CI/badge.svg)](https://github.com/joseluisq/static-web-server/actions?query=workflow%3ACI) [![Docker Image Version (tag latest semver)](https://img.shields.io/docker/v/joseluisq/static-web-server/2)](https://hub.docker.com/r/joseluisq/static-web-server/) [![Docker Image Size (tag)](https://img.shields.io/docker/image-size/joseluisq/static-web-server/2)](https://hub.docker.com/r/joseluisq/static-web-server/tags) [![Docker Image](https://img.shields.io/docker/pulls/joseluisq/static-web-server.svg)](https://hub.docker.com/r/joseluisq/static-web-server/)
 
 > A blazing fast and asynchronous web server for static files-serving. ⚡
 
@@ -12,7 +12,7 @@ _**Note:** For `v1` please refer to [1.x](https://github.com/joseluisq/static-we
 - Memory safety and very reduced CPU and RAM overhead.
 - Blazing fast static files-serving and asynchronous powered by latest [Hyper](https://github.com/hyperium/hyper/), [Tokio](https://github.com/tokio-rs/tokio) and a set of [awesome crates](./Cargo.toml).
 - Single __4MB__ and fully static binary with no dependencies ([Musl libc](https://doc.rust-lang.org/edition-guide/rust-2018/platform-and-target-support/musl-support-for-fully-static-binaries.html)). Suitable for running on [any Linux distro](https://en.wikipedia.org/wiki/Linux_distribution) or [Docker container](https://hub.docker.com/r/joseluisq/static-web-server/tags).
-- GZip, Deflate or Brotli compression for text-based web files only.
+- Optional GZip, Deflate or Brotli compression for text-based web files only.
 - Compression on demand via [Accept-Encoding](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding) header.
 - [Partial Content Delivery](https://en.wikipedia.org/wiki/Byte_serving) support for byte-serving of large files.
 - Optional [Cache Control](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control) headers for assets.