docs: update

neofetch

@@ -4464,7 +4464,7 @@ IMAGE BACKEND:
     --termpix source            Shortcut to use 'termpix' backend.
     --tycat source              Shortcut to use 'tycat' backend.
     --w3m source                Shortcut to use 'w3m' backend.
-    --off                       Shortcut to use 'off' backend.
+    --off                       Shortcut to use 'off' backend (Disable ascii art).
 
     NOTE: 'source; can be any of the following: 'auto', 'ascii', 'wallpaper', '/path/to/img',
     '/path/to/ascii', '/path/to/dir/'

neofetch.1

@@ -232,7 +232,7 @@ Shortcut to use 'tycat' backend.
 Shortcut to use 'w3m' backend.
 .TP
 \fB\-\-off\fR
-Shortcut to use 'off' backend.
+Shortcut to use 'off' backend (Disable ascii art).
 .IP
 NOTE: 'source; can be any of the following: 'auto', 'ascii', 'wallpaper', '/path/to/img',
 \&'/path/to/ascii', '/path/to/dir/'