chore: Update swww references to new name, awww

Context: https://www.lgfae.com/posts/2025-10-29-RenamingSwww.html

Fixes #221

Author: bcyran

nix/hm-module.nix

@@ -85,7 +85,7 @@ in {
               Command to set the wallpaper. Use "%f" as a placeholder for the file path.
               The command is NOT passed through a shell.
             '';
-            example = ["sww" "img" "%f"];
+            example = ["awww" "img" "%f"];
           };
           overlap = lib.mkOption {
             type = lib.types.int;

src/config.rs

@@ -28,9 +28,9 @@ const DEFAULT_CONFIG_FILE_CONTENT: &str = "\
 # lon = 17.02
 
 # Uncomment and adjust the following section to use a custom wallpaper setter command.
-# The example uses `swww`: https://github.com/LGFae/swww.
+# The example uses `awww`: https://codeberg.org/LGFae/awww
 # [setter]
-# command = ['swww', 'img', '%f']
+# command = ['awww', 'img', '%f']
 # overlap = 0
 # quiet = true