BaseHTTPRequestHandler, that path includes query (#25597)

* Clarify, for BaseHTTPRequestHandler, that path includes query

Co-authored-by: David Jones <drj@pobox.com>
diff --git a/Doc/library/http.server.rst b/Doc/library/http.server.rst
index 478a5b3..729d7e3 100644
--- a/Doc/library/http.server.rst
+++ b/Doc/library/http.server.rst
@@ -98,7 +98,9 @@
 
    .. attribute:: path
 
-      Contains the request path.
+      Contains the request path. If query component of the URL is present,
+      then ``path`` includes the query. Using the terminology of :rfc:`3986`,
+      ``path`` here includes ``hier-part`` and the ``query``.
 
    .. attribute:: request_version