fix typo and writing improvement

README.md

@@ -65,11 +65,11 @@ This is exactly what we're doing to set the default deployment user to `colmena-
 
 ## Build NixOS Proxmox VE Template
 
-Build a new NixOS Proxmox VE Template for the thinkcccore's
+Build a new NixOS Proxmox VE Template for the thinkcccore's.
 ```shell
 nix build .#proxmox-nixos-template
 ```
-Build a new NixOS Proxmox VE Template for the chaosknoten
+Build a new NixOS Proxmox VE Template for the chaosknoten.
 ```shell
 nix build .#proxmox-chaosknoten-nixos-template
 ```