[1.4.X] Fixed #18577 - Clarified middleware initialization.

Thanks Lukasz Balcerzak for the patch.

Backport of 590de18add from master

1 files changed, 2 insertions, 1 deletions

diff --git a/docs/topics/http/middleware.txt b/docs/topics/http/middleware.txt
index a768a3bbd8..fe92bc59a9 100644
--- a/docs/topics/http/middleware.txt
+++ b/docs/topics/http/middleware.txt
@@ -199,7 +199,8 @@ of caveats:
   define ``__init__`` as requiring any arguments.
 
 * Unlike the ``process_*`` methods which get called once per request,
-  ``__init__`` gets called only *once*, when the Web server starts up.
+  ``__init__`` gets called only *once*, when the Web server responds to the
+  first request.
 
 Marking middleware as unused
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~