hbal uses -p not -P (missed one)

howto/ganeti.md

@@ -1277,7 +1277,7 @@ instances around the cluster to balance it:
     hbal -L -C -v -p
 
 The above will show the proposed solution, with the state of the
-cluster before, and after (`-P`) and the commands to get there
+cluster before, and after (`-p`) and the commands to get there
 (`-C`). To actually execute the commands, you can copy-paste those
 commands. An alternative is to pass the `-X` argument, to tell `hbal`
 to actually issue the commands itself: