Addressed more doc review comments

Signed-off-by: Marco Pracucci <marco@pracucci.com>

docs/sources/mimir/configure/configuration-parameters/index.md

@@ -1073,7 +1073,7 @@ The `ingester` block configures the ingester.
 ```yaml
 ring:
   # The key-value store used to share the hash ring across multiple instances.
-  # This option needs be set on ingesters, distributors, queriers and rulers
+  # This option needs be set on ingesters, distributors, queriers, and rulers
   # when running in microservices mode.
   kvstore:
     # Backend storage to use for the ring. Supported values are: consul, etcd,
@@ -1220,7 +1220,7 @@ ring:
 
 partition_ring:
   # The key-value store used to share the hash ring across multiple instances.
-  # This option needs be set on ingesters, distributors, queriers and rulers
+  # This option needs be set on ingesters, distributors, queriers, and rulers
   # when running in microservices mode.
   kvstore:
     # Backend storage to use for the ring. Supported values are: consul, etcd,

pkg/ingester/ingester_partition_ring.go

@@ -11,7 +11,7 @@ import (
 )
 
 type PartitionRingConfig struct {
-	KVStore kv.Config `yaml:"kvstore" doc:"description=The key-value store used to share the hash ring across multiple instances. This option needs be set on ingesters, distributors, queriers and rulers when running in microservices mode."`
+	KVStore kv.Config `yaml:"kvstore" doc:"description=The key-value store used to share the hash ring across multiple instances. This option needs be set on ingesters, distributors, queriers, and rulers when running in microservices mode."`
 
 	// MinOwnersCount maps to ring.PartitionInstanceLifecyclerConfig's WaitOwnersCountOnPending.
 	MinOwnersCount int `yaml:"min_partition_owners_count"`

pkg/ingester/ingester_ring.go

@@ -35,7 +35,7 @@ const sharedOptionWithRingClient = " This option needs be set on ingesters, dist
 var ErrSpreadMinimizingValidation = fmt.Errorf("%q token generation strategy is misconfigured", tokenGenerationSpreadMinimizing)
 
 type RingConfig struct {
-	KVStore              kv.Config              `yaml:"kvstore" doc:"description=The key-value store used to share the hash ring across multiple instances. This option needs be set on ingesters, distributors, queriers and rulers when running in microservices mode."`
+	KVStore              kv.Config              `yaml:"kvstore" doc:"description=The key-value store used to share the hash ring across multiple instances. This option needs be set on ingesters, distributors, queriers, and rulers when running in microservices mode."`
 	HeartbeatPeriod      time.Duration          `yaml:"heartbeat_period" category:"advanced"`
 	HeartbeatTimeout     time.Duration          `yaml:"heartbeat_timeout" category:"advanced"`
 	ReplicationFactor    int                    `yaml:"replication_factor"`