update 'got ref' branch creation example
diff --git a/got/got.1 b/got/got.1
index 73e69b6..b395b0e 100644
--- a/got/got.1
+++ b/got/got.1
@@ -381,7 +381,7 @@ which is forked off the
.Dq master
branch:
.Pp
-.Dl $ got ref mybranch master
+.Dl $ got ref refs/heads/mybranch refs/heads/master
.Sh SEE ALSO
.Xr git-repository 5
.Xr got-worktree 5