hack/patch: remove "you" in markdown doc

Signed-off-by: Gyu-Ho Lee <gyuhox@gmail.com>

hack/patch/README.md

@@ -6,9 +6,9 @@ Handles cherry-picks of PR(s) from etcd master to a stable etcd release branch a
 
 Set the `UPSTREAM_REMOTE` and `FORK_REMOTE` environment variables.
 `UPSTREAM_REMOTE` should be set to git remote name of `github.com/coreos/etcd`,
-and `FORK_REMOTE` should be set to the git remote name of your fork of the etcd
-repo (`github.com/${github-username}/etcd`). Use `git remotes -v` if you need to
-look up your git remote names. If you don't already have a fork of etcd create
+and `FORK_REMOTE` should be set to the git remote name of the forked etcd
+repo (`github.com/${github-username}/etcd`). Use `git remotes -v` to
+look up the git remote names. If etcd has not been forked, create
 one on github.com and register it locally with `git remote add ...`.