Update doom module readme file template

modules/feature/file-templates/templates/org-mode/__doom-readme

@@ -17,31 +17,17 @@ ${3:If necessary, include a longer description below it that goes into more deta
 
 * Table of Contents :TOC:
 
-* Install
+* Module Flags
-** Main dependencies
+This module provides no flags.
-*** MacOS
-#+BEGIN_SRC sh :tangle (if (doom-system-os 'macos) "yes")
-brew install x
-#+END_SRC
 
-*** Arch Linux
+* Prerequisites
-#+BEGIN_SRC sh :dir /sudo:: :tangle (if (doom-system-os 'arch) "yes")
+This module has no prereqisites.
-sudo pacman --needed --noconfirm -S X
-#+END_SRC
 
-** Extra Dependencies
+* Features
-+ A
+A list of features, how to use them, and their dependencies.
-+ B
-+ C
-
-#+BEGIN_SRC sh
-Y install A B C
-#+END_SRC
 
 * Configuration
 
-* Usage
-
 * Appendix
 ** Commands
 ** Hacks