add the multiprocessing package to fulfill PEP 371
diff --git a/Doc/library/someos.rst b/Doc/library/someos.rst
index 5ee96bc..0e2013b 100644
--- a/Doc/library/someos.rst
+++ b/Doc/library/someos.rst
@@ -18,6 +18,7 @@
    threading.rst
    dummy_thread.rst
    dummy_threading.rst
+   multiprocessing.rst
    mmap.rst
    readline.rst
    rlcompleter.rst