doc: lint markdown files

Only way to have a unified markdown syntax is to enforce the wanted
syntax by linting the files. Don't rely on the many markdown syntaxes,
be consistent.

salt/whonix-gateway/README.md

@@ -4,9 +4,9 @@ Whonix Gateway Template in Qubes OS.
 
 ## Table of Contents
 
-* [Description](#description)
-* [Installation](#installation)
-* [Usage](#usage)
+*   [Description](#description)
+*   [Installation](#installation)
+*   [Usage](#usage)
 
 ## Description
 
@@ -15,7 +15,8 @@ it.
 
 ## Installation
 
-- Top:
+*   Top:
+
 ```sh
 sudo qubesctl top.enable whonix-gateway
 sudo qubesctl --targets=whonix-gateway-17 state.apply
@@ -23,13 +24,16 @@ sudo qubesctl top.disable whonix-gateway
 sudo qubesctl state.apply whonix-gateway.appmenus
 ```
 
-- State:
+*   State:
+
 <!-- pkg:begin:post-install -->
+
 ```sh
 sudo qubesctl state.apply whonix-gateway.create
 sudo qubesctl --skip-dom0 --targets=whonix-gateway-17 state.apply whonix-gateway.install
 sudo qubesctl state.apply whonix-gateway.appmenus
 ```
+
 <!-- pkg:end:post-install -->
 
 ## Usage