[dns] minor fixes

docs/scripts/api-events.py

@@ -8,7 +8,7 @@ from typing import List, Type
 import mitmproxy.addons.next_layer  # noqa
 from mitmproxy import hooks, log, addonmanager
 from mitmproxy.proxy import server_hooks, layer
-from mitmproxy.proxy.layers import http, modes, tcp, tls, websocket
+from mitmproxy.proxy.layers import dns, http, modes, tcp, tls, websocket
 
 known = set()
 
@@ -106,6 +106,16 @@ with outfile.open("w") as f, contextlib.redirect_stdout(f):
         ]
     )
 
+    category(
+        "DNS",
+        "",
+        [
+            dns.DnsRequestHook,
+            dns.DnsResponseHook,
+            dns.DnsErrorHook,
+        ]
+    )
+
     category(
         "TCP",
         "",