Slightly improve docker-linux-server.md

- fix typo
- add link to PhantomJS
- improve formatting

Signed-off-by: Salim B <salim@posteo.de>

docs/setup/docker-linuxserver.md

@@ -2,13 +2,13 @@ LinuxServer.io CodiMD Image
 ===
 [![LinuxServer.io Discord](https://img.shields.io/discord/354974912613449730.svg?logo=discord&label=LSIO%20Discord&style=flat-square)](https://discord.gg/YWrKVTn)[![container version badge](https://images.microbadger.com/badges/version/linuxserver/codimd.svg)](https://microbadger.com/images/linuxserver/codimd "Get your own version badge on microbadger.com")[![container image size badge](https://images.microbadger.com/badges/image/linuxserver/codimd.svg)](https://microbadger.com/images/linuxserver/codimd "Get your own version badge on microbadger.com")![Docker Pulls](https://img.shields.io/docker/pulls/linuxserver/codimd.svg)![Docker Stars](https://img.shields.io/docker/stars/linuxserver/codimd.svg)[![Build Status](https://ci.linuxserver.io/buildStatus/icon?job=Docker-Pipeline-Builders/docker-codimd/master)](https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-codimd/job/master/)[![LinuxServer.io CI summary](https://lsio-ci.ams3.digitaloceanspaces.com/linuxserver/codimd/latest/badge.svg)](https://lsio-ci.ams3.digitaloceanspaces.com/linuxserver/codimd/latest/index.html)
 
-[LinuxServer.io](https://linuxserver.io) have created an Ubuntu-based multi-arch container image for x86-64, arm64 and armhf which supports PDF export from all architectures using PhatomJS.
+[LinuxServer.io](https://linuxserver.io) have created an Ubuntu-based multi-arch container image for x86-64, arm64 and armhf which supports PDF export from all architectures using [PhantomJS](https://phantomjs.org/).
 
-It supports all the environmental variables detailed in the [environment configuration documentation](../configuration-env-vars.md) to modify it according to your needs.
+- It supports all the environment variables detailed in the [configuration documentation](../configuration-env-vars.md) to modify it according to your needs.
 
-It gets rebuilt on new releases from CodiMD and also weekly if necessary to update any other package changes in the underlying container, making it easy to keep your CodiMD instance up to date.
+- It gets rebuilt on new releases from CodiMD and also weekly if necessary to update any other package changes in the underlying container, making it easy to keep your CodiMD instance up to date.
 
-It also details how to easily [utilize Docker networking to reverse proxy](https://github.com/linuxserver/docker-codimd/#application-setup) CodiMD using their [LetsEncrypt docker image](https://github.com/linuxserver/docker-letsencrypt)
+- It also details how to easily [utilize Docker networking to reverse proxy](https://github.com/linuxserver/docker-codimd/#application-setup) CodiMD using their [LetsEncrypt docker image](https://github.com/linuxserver/docker-letsencrypt)
 
 In order to contribute check the LinuxServer.io [GitHub repository](https://github.com/linuxserver/docker-codimd/) for CodiMD.
 And to find all tags and versions of the image, check the [Docker Hub repository](https://hub.docker.com/r/linuxserver/codimd).