doc: Fix sphinx reference warning for windows.
Footnote reference 5, 8, and 9 are not referenced in the windws.rst content,
causing the following error:
Warning, treated as error:
/root/ovs/Documentation/topics/windows.rst:506:Footnote [5] is not referenced.
@@ -253,7 +253,7 @@ Netlink Message Parser
~~~~~~~~~~~~~~~~~~~~~~
The communication between OVS userspace and OVS kernel datapath is in the form
-of Netlink messages [1]_. More details about this are provided below. In the
+of Netlink messages [1]_, [8]_. More details about this are provided below. In the
kernel, a full fledged netlink message parser has been implemented along the
lines of the netlink message parser in OVS userspace. In fact, a lot of the
code is ported code.
@@ -407,7 +407,7 @@ As has been mentioned in earlier sections, the netlink socket and netlink
message based DPIF provider on Linux has been ported to Windows.
Most of the code is common. Some divergence is in the code to receive packets.
-The Linux implementation uses epoll() which is not natively supported on
+The Linux implementation uses epoll() [9]_ which is not natively supported on
Windows.
netdev-windows
