Fix unresolved link to SocketAncillary

LinkTed · LinkTed · commit 4178d0de9fef · 2020-10-10T15:19:13.000+02:00
diff --git a/std/src/sys/unix/ext/net/datagram.rs b/std/src/sys/unix/ext/net/datagram.rs
@@ -1,4 +1,5 @@
 #[cfg(any(
+    doc,
     target_os = "android",
     target_os = "dragonfly",
     target_os = "emscripten",
diff --git a/std/src/sys/unix/ext/net/stream.rs b/std/src/sys/unix/ext/net/stream.rs
@@ -1,4 +1,5 @@
 #[cfg(any(
+    doc,
     target_os = "android",
     target_os = "dragonfly",
     target_os = "emscripten",
