ssh: fix a formatting bug in a test
ssh: fix a formatting bug in a test

Change-Id: I34cc1a5a8c59c5e4c0313d7a41c3f31cdbad9e98
Reviewed-on: https://go-review.googlesource.com/47933
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

golang/crypto,golang/crypto,ScriptRock/crypto,golang/crypto,ScriptRock/crypto