docs: unify documentation

Strictly enforce diataxis
Use resource driven approach
Can extend later to add 'developer' link index page

clanModules/borgbackup-static/README.md

@@ -4,7 +4,7 @@ description = "Statically configure borgbackup with sane defaults."
 !!! Danger "Deprecated"
     Use [borgbackup](borgbackup.md) instead.
 
-    Don't use borgbackup-static through [inventory](../../guides/inventory.md).
+    Don't use borgbackup-static through [inventory](../../concepts/inventory.md).
 
 This module implements the `borgbackup` backend and implements sane defaults
 for backup management through `borgbackup` for members of the clan.

clanModules/root-password/README.md

@@ -12,7 +12,7 @@ After the system was installed/deployed the following command can be used to dis
 clan vars get [machine_name] root-password/root-password
 ```
 
-See also: [Vars](../../guides/vars-backend.md)
+See also: [Vars](../../concepts/generators.md)
 
 To regenerate the password run:
 ```

clanModules/user-password/README.md

@@ -16,7 +16,7 @@ After the system was installed/deployed the following command can be used to dis
 clan vars get [machine_name] root-password/root-password
 ```
 
-See also: [Vars](../../guides/vars-backend.md)
+See also: [Vars](../../concepts/generators.md)
 
 To regenerate the password run:
 ```