Use mod_accounting in send Accounting-Response

There's very little point in logging accouning responses in detail
files, and the sample config calls "detail" in the send
Accounting-Response section.

src/modules/rlm_detail/rlm_detail.c

@@ -513,6 +513,7 @@ module_rlm_t rlm_detail = {
 		.bindings = (module_method_binding_t[]){
 			{ .section = SECTION_NAME("accounting", CF_IDENT_ANY), .method = mod_accounting, .method_env = &method_env },
 			{ .section = SECTION_NAME("recv", "accounting-request"), .method = mod_accounting, .method_env = &method_env },
+			{ .section = SECTION_NAME("send", "accounting-response"), .method = mod_accounting, .method_env = &method_env },
 			{ .section = SECTION_NAME("recv", CF_IDENT_ANY), .method = mod_authorize, .method_env = &method_env },
 			{ .section = SECTION_NAME("send", CF_IDENT_ANY), .method = mod_post_auth, .method_env = &method_env },
 			MODULE_BINDING_TERMINATOR