fix wormhole --appid option position

fix wormhole --appid option position

p2p: Pass wormhole the --appid option before the receive/send command, as
it does not accept that option after the command

I'm left wondering, did I get this wrong from the beginning, or did
wormhole change its option parser? I'm reminded of the change in 0.8.2
where it silently changed what FD the pairing code was output to.
But, looking at the wormhole source, it was at least putting --appid before
send in its test suite from the introduction of the option.

So I think probably this has always been broken. On 2021-12-31 the --appid
option was enabled, and it took until now for someone to try
git-annex p2p --pair and notice that flag day broke it..

Sponsored-by: Svenne Krap on Patreon