Closes #11710: create "landing pages" (/library/package.html) for those packages that have no documented content themselves, e.g. "urllib" or "http".
diff --git a/Doc/library/concurrent.rst b/Doc/library/concurrent.rst
new file mode 100644
index 0000000..2eba536
--- /dev/null
+++ b/Doc/library/concurrent.rst
@@ -0,0 +1,6 @@
+The :mod:`concurrent` package
+=============================
+
+Currently, there is only one module in this package:
+
+* :mod:`concurrent.futures` -- Launching parallel tasks