From 109ea3eddcc461438bae8759f18beb985613af82 Mon Sep 17 00:00:00 2001
From: alanprot <alanprot@gmail.com>
Date: Tue, 2 Apr 2024 09:56:30 -0700
Subject: [PATCH] update doc

Signed-off-by: alanprot <alanprot@gmail.com>
---
 docs/configuration/config-file-reference.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/configuration/config-file-reference.md b/docs/configuration/config-file-reference.md
index e0597f15b2..60fbc8707c 100644
--- a/docs/configuration/config-file-reference.md
+++ b/docs/configuration/config-file-reference.md
@@ -293,6 +293,12 @@ The `alertmanager_config` configures the Cortex alertmanager.
 # CLI flag: -alertmanager.max-recv-msg-size
 [max_recv_msg_size: <int> | default = 16777216]
 
+# Prometheus AlertManager experimental features to enable. The flag can be
+# repeated to enable multiple features. Valid options: receiver-name-in-metrics,
+# classic-mode, utf8-strict-mode
+# CLI flag: -alertmanager.enable-feature
+[feature_flags: <string> | default = ""]
+
 # Shard tenants across multiple alertmanager instances.
 # CLI flag: -alertmanager.sharding-enabled
 [sharding_enabled: <boolean> | default = false]