Fix two remote_timeout configs in ingester_client block (#5418)

* Fix two remote_timeout configs in ingester_client block

* Add default value of remote_timeout in document

docs/sources/configuration/_index.md

@@ -1010,10 +1010,11 @@ pool_config:
   # How quickly a dead client will be removed after it has been detected
   # to disappear. Set this to a value to allow time for a secondary
   # health check to recover the missing client.
-  [remotetimeout: <duration>]
+  # CLI flag: -ingester.client.healthcheck-timeout
+  [remote_timeout: <duration> | default = 1s]
 
 # The remote request timeout on the client side.
-# CLI flag: -ingester.client.healthcheck-timeout
+# CLI flag: -ingester.client.timeout
 [remote_timeout: <duration> | default = 5s]
 
 # Configures how the gRPC connection to ingesters work as a client

pkg/distributor/clientpool/ingester_client_pool.go

@@ -21,7 +21,7 @@ var clients = promauto.NewGauge(prometheus.GaugeOpts{
 type PoolConfig struct {
 	ClientCleanupPeriod  time.Duration `yaml:"client_cleanup_period"`
 	HealthCheckIngesters bool          `yaml:"health_check_ingesters"`
-	RemoteTimeout        time.Duration `yaml:"-"`
+	RemoteTimeout        time.Duration `yaml:"remote_timeout"`
 }
 
 // RegisterFlags adds the flags required to config this to the given FlagSet.