userspace-tunnelling.rst: Fix a typo in the userspace tunnel guide
This commit fixes potential unintended mistake in userspace-tunneling guide: for the example in userspace-tunneling guide, there is no bridge named "br-eth1", but only a bridge name "br-phy" which has a port named "eth1"
@@ -172,7 +172,7 @@ Once complete, check the cached routes using ovs-appctl command::
If the tunnel route is missing, adding it now::
- $ ovs-appctl ovs/route/add 172.168.1.1/24 br-eth1
+ $ ovs-appctl ovs/route/add 172.168.1.1/24 br-phy
Repeat these steps if necessary for `host2`, but using ``192.168.1.1`` and
``172.168.1.2`` for the VM and tunnel interface IP addresses, respectively.
