fix typo

howto/ganeti.md

@@ -2841,7 +2841,7 @@ other words, the MAC address must have 2, 6, A or E as a its second
     xE - xx - xx - xx - xx - xx
 
 We used `06:66:38` in the gnt-chi cluster for that reason. We picked
-the `06:66` prefix to ressemble the existing `00:66` prefix used in
+the `06:66` prefix to resemble the existing `00:66` prefix used in
 `gnt-fsn` but varied the last quad (from `:37` to `:38`) to make them
 slightly more different-looking.