pythongh-100001: Remove doc typo, add versionadded (pythonGH-100042)

(cherry picked from commit bed15f8)

Co-authored-by: Gregory P. Smith <greg@krypto.org>
pythongh-100001: Remove new doc typo, add versionadded.

Doc/library/http.server.rst

@@ -503,6 +503,8 @@ to be served.
 Earlier versions of Python did not scrub control characters from the
 log messages emitted to stderr from ``python -m http.server`` or the
 default :class:`BaseHTTPRequestHandler` ``.log_message``
-implementation. This could allow to remote clients connecting to your
+implementation. This could allow remote clients connecting to your
 server to send nefarious control codes to your terminal.
 
+.. versionadded:: 3.12
+   Control characters are scrubbed in stderr logs.