no bug - fx doc: update info about blocking DLLs that load via window hook r=yjuglaret DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D174906

widget/windows/docs/blocklist.rst

@@ -208,8 +208,12 @@ As our blocklist works as explained above, there are the cases where we should n
   | Blocking this type of module blocks even a process from launching. You may be able to block this type of module with RedirectToNoOpEntryPoint.
 - | A module is loaded as a `Layered Service Provider <https://docs.microsoft.com/en-us/windows/win32/winsock/categorizing-layered-service-providers-and-applications>`_
   | Blocking this type of module on Windows 8 or newer breaks networking. Blocking a LSP on Windows 7 is ok.
-- | A module is loaded via a `Window hook <https://docs.microsoft.com/en-us/windows/win32/winmsg/hooks>`_
-  | Blocking this type of module causes repetitive attempts to load a module, resulting in slow performance like `Bug 1633718 <https://bugzilla.mozilla.org/show_bug.cgi?id=1633718>`_.
+
+(we used to have to avoid blocking modules loaded via a
+`Window hook <https://docs.microsoft.com/en-us/windows/win32/winmsg/hooks>`_ because blocking this type of
+module would cause repetitive attempts to load a module, resulting in slow performance
+like `Bug 1633718 <https://bugzilla.mozilla.org/show_bug.cgi?id=1633718>`_, but this should be fixed
+as of `Bug 1823412 <https://bugzilla.mozilla.org/show_bug.cgi?id=1823412>`_.)
 
 Third-party-module ping
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