Fix Issue #6005: Examples in the socket library documentation use sendall,
where relevant, instead send method.
diff --git a/Doc/howto/sockets.rst b/Doc/howto/sockets.rst
index e2703f5..a4ae9c0 100644
--- a/Doc/howto/sockets.rst
+++ b/Doc/howto/sockets.rst
@@ -1,3 +1,5 @@
+.. _socket-howto:
+
 ****************************
   Socket Programming HOWTO
 ****************************