chore: fix typo in openchannel hook log

Nit: The underscore in "openchannel_hook" is wrong, bcause the name of
the hook is just "openchannel". The "_hook" implied this to be part of
the name.

Changelog-None

lightningd/dual_open_control.c

@@ -387,7 +387,7 @@ openchannel2_hook_cb(struct openchannel2_payload *payload STEALS)
 
 	if (payload->err_msg) {
 		log_debug(dualopend->ld->log,
-			  "openchannel2_hook rejects and says '%s'",
+			  "openchannel2 hook rejects and says '%s'",
 			  payload->err_msg);
 		msg = towire_dualopend_fail(NULL, payload->err_msg);
 		return subd_send_msg(dualopend, take(msg));

lightningd/opening_control.c

@@ -707,7 +707,7 @@ openchannel_hook_deserialize(struct openchannel_hook_payload *payload,
 		if (t_errmsg)
 			payload->errmsg = json_strdup(payload, buffer, t_errmsg);
 		log_debug(openingd->ld->log,
-			  "openchannel_hook rejects and says '%s'",
+			  "openchannel hook rejects and says '%s'",
 			  payload->errmsg);
 		if (t_closeto)
 			fatal("Plugin rejected openchannel but also set close_to");
@@ -724,7 +724,7 @@ openchannel_hook_deserialize(struct openchannel_hook_payload *payload,
 		/* First plugin can set close_to. Log others. */
 		if (payload->our_upfront_shutdown_script != NULL) {
 			log_broken(openingd->ld->log,
-				   "openchannel_hook close_to address was"
+				   "openchannel hook close_to address was"
 				   " already set by other plugin. Ignoring!");
 			return true;
 		}

tests/test_plugin.py

@@ -644,7 +644,7 @@ def test_openchannel_hook_chaining(node_factory, bitcoind):
     l1, l2 = node_factory.line_graph(2, fundchannel=False, opts=opts)
     l1.fundwallet(10**6)
 
-    hook_msg = "openchannel2?_hook rejects and says '"
+    hook_msg = "openchannel2? hook rejects and says '"
     # 100005sat fundchannel should fail fatal() for l2
     # because hook_accepter.py rejects on that amount 'for a reason'
     with pytest.raises(RpcError, match=r'They sent error channel'):