[3.7] bpo-34576 : Backport eeab510b (#10114)

* bpo-34576 - Fix the formatting for security considerations in http.server.rst (#10005)

(cherry picked from commit eeab510b)

Doc/library/http.server.rst

@@ -16,6 +16,11 @@
 
 This module defines classes for implementing HTTP servers (Web servers).
 
+.. warning::
+
+    :mod:`http.server` is not recommended for production. It only implements
+    basic security checks.
+
 One class, :class:`HTTPServer`, is a :class:`socketserver.TCPServer` subclass.
 It creates and listens at the HTTP socket, dispatching the requests to a
 handler.  Code to create and run the server looks like this::