docs: add hyperlinks

README.md

@@ -5,7 +5,9 @@ Systemd unit files for use with the Minecraft Server and associated services
 
 # Features
 
-- Supports use with Minecraft server software PaperMC, SpigotMC and Vanilla.
+- Supports use with Minecraft server software [PaperMC](https://papermc.io/),
+[SpigotMC](https://www.spigotmc.org/) and
+[Vanilla](https://www.minecraft.net/download/server/).
 - Backup the Minecraft server directory.
   - To an archive.
   - Sync to a desired destination.
@@ -14,7 +16,7 @@ Systemd unit files for use with the Minecraft Server and associated services
 # System Requirements
 
 - GNU Linux operating System
-- Git
+- [Git](https://git-scm.com/)
 - [Wardenctl](https://gitlab.com/adouglas/wardenctl)
 
 # Installation