Fix the land destination branch to not use "origin/" in .reviewboardrc.
Fix the land destination branch to not use "origin/" in .reviewboardrc.

.reviewboardrc was pointing to "origin/<name>" instead of "<name>",
which was the wrong location to land to.

reviewboard/rbtools,datjwu/rbtools,datjwu/rbtools,reviewboard/rbtools,beol/rbtools,reviewboard/rbtools,davidt/rbtools,halvorlu/rbtools,davidt/rbtools,haosdent/rbtools,haosdent/rbtools,halvorlu/rbtools,haosdent/rbtools,datjwu/rbtools,davidt/rbtools,beol/rbtools,beol/rbtools,halvorlu/rbtools