README: use deny-list/allow-list vocabulary in accept_decision hook row

Last stray "block-list" reference in the hook-phase table, missed by the
IP access-control rename.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NpysYDDJac63yz2mZKKiDf

Author: etr

README.md

@@ -1579,7 +1579,7 @@ so the registration persists for the webserver's lifetime.
 | Phase | Fires at | Short-circuit | Per-route eligible |
 |-------|----------|---------------|--------------------|
 | `connection_opened` | New TCP / TLS connection accepted by MHD | No | No |
-| `accept_decision` | After the default-policy / block-list verdict; the connection has been accepted or denied | No | No |
+| `accept_decision` | After the default-policy / deny-list / allow-list verdict; the connection has been accepted or denied | No | No |
 | `request_received` | Request line and headers parsed, body not yet consumed | Yes (`hook_action`) | No |
 | `body_chunk` | Each upload-body chunk delivered by MHD | Yes (`hook_action`) | No |
 | `route_resolved` | After URL → resource resolution; carries the matched route or "no match" | No | No |