Docs: revise block names (ring and filesystem) and correct spelling (#5015)

* Docs: revise block names (ring and filesystem) and correct spelling

* Docs: scheduler_ring and compactor_ring point to ring config
   Change made per review comment.

docs/sources/configuration/_index.md

@@ -321,7 +321,7 @@ The `query_scheduler` block configures the Loki query scheduler.
 
 # The hash ring configuration. This option is required only if use_scheduler_ring is true
 # The CLI flags prefix for this block config is scheduler.ring
-[scheduler_ring: <ring_config>]
+[scheduler_ring: <ring>]
 ```
 
 ## frontend
@@ -453,7 +453,7 @@ storage:
   # Configures backend rule storage for Swift.
   [swift: <swift_storage_config>]
 
-  # Configures backend rule storage for a local filesystem directory.
+  # Configures backend rule storage for a local file system directory.
   [local: <local_storage_config>]
 
   # The `hedging_config` configures how to hedge requests for the storage.
@@ -877,7 +877,7 @@ You should configure the latency based on your p99 of object store requests.
 
 ## local_storage_config
 
-The `local_storage_config` configures a (local) filesystem as a general storage for different data generated by Loki.
+The `local_storage_config` configures a (local) file system as a general storage for different data generated by Loki.
 
 ```yaml
 # Filesystem directory to be used as storage.
@@ -1577,14 +1577,14 @@ swift:
   [container_name: <string> | default = "cortex"]
 
 # Configures storing index in BoltDB. Required fields only
-# required when boltdb is present in config.
+# required when boltdb is present in the configuration.
 boltdb:
   # Location of BoltDB index files.
   # CLI flag: -boltdb.dir
   directory: <string>
 
-# Configures storing the chunks on the local filesystem. Required
-# fields only required when filesystem is present in config.
+# Configures storing the chunks on the local file system. Required
+# fields only required when filesystem is present in the configuration.
 filesystem:
   # Directory to store chunks in.
   # CLI flag: -local.chunk-directory
@@ -1917,7 +1917,7 @@ compacts index shards to more performant forms.
 
 # The hash ring configuration used by compactors to elect a single instance for running compactions
 # The CLI flags prefix for this block config is: boltdb.shipper.compactor.ring
-[compactor_ring: <ring_config>]
+[compactor_ring: <ring>]
 ```
 
 ## limits_config
@@ -2376,7 +2376,7 @@ This way, one doesn't have to replicate configuration in multiple places.
 # For instance, you can expect the `heartbeat_period` defined in the common section
 # to be used by the distributor's ring, but only if the distributor's ring itself
 # doesn't have a `heartbeat_period` set.
-[ring: <ring_config>]
+[ring: <ring>]
 ```
 
 ### storage
@@ -2398,29 +2398,29 @@ If any specific configuration for an object storage client have been provided el
 # Configures Swift as the common storage.
 [swift: <swift_storage_config>]
 
-# Configures a (local) filesystem as the common storage.
-[filesystem: <fs_storage_config>]
+# Configures a (local) file system as the common storage.
+[filesystem: <filesystem>]
 
 # The `hedging_config` configures how to hedge requests for the storage.
 [hedging: <hedging_config>]
 ```
 
-### fs_storage_config
+### filesystem
 
-The `fs_storage_config` configures a local filesystem as a general
-storage for different data generated by Loki.
+The common `filesystem` block configures a local file system as a general
+storage for various types of data generated by Loki.
 
 ```yaml
-# Filesystem directory to be used for chunks storage.
+# File system directory to be used for chunks storage.
 [chunks_directory: <filename> | default = ""]
 
-# Filesystem directory to be used for rules storage.
+# File system directory to be used for rules storage.
 [rules_directory: <filename> | default = ""]
 ```
 
-### ring_config
+### ring
 
-The `ring_config` blocks defines a ring configuration used by Loki component.
+The common `ring` block defines a ring configuration used by a Loki component.
 
 ```yaml
 # The key-value store used to share the hash ring across multiple instances.