Fix type of Traceroute ip_path property

Solves RIPE-NCC#87

docs/types.rst

@@ -95,7 +95,7 @@ size                      int       The packet size
 protocol                  str       One of ``ICMP``, ``TCP``, ``UDP``
 hops                      list      A list of :ref:`traceroute-hop` objects. If the ``parse_all_hops`` parameter is ``False``, this will only contain the last hop.
 total_hops                int       The total number of hops
-ip_path                   list      A list of dicts containing the IPs at each hop. This is just for convenience as all of these values are accessible via the :ref:`traceroute-hop` and :ref:`traceroute-packet` objects.
+ip_path                   list      A list of list containing the IPs at each hop. This is just for convenience as all of these values are accessible via the :ref:`traceroute-hop` and :ref:`traceroute-packet` objects.
 last_median_rtt           float     The median value of all RTTs from the last successful hop
 destination_ip_responded  bool      Set to ``True`` if the last hop was a response from the destination IP
 last_hop_responded        bool      Set to ``True`` if the last hop was a response at all