Add the functionality to the documentation.

CLI.md

@@ -55,6 +55,7 @@ This document contains the help content for the `linera` command-line program.
 * [`linera storage check_absence`↴](#linera-storage-check_absence)
 * [`linera storage initialize`↴](#linera-storage-initialize)
 * [`linera storage list_namespaces`↴](#linera-storage-list_namespaces)
+* [`linera storage list_root_keys`↴](#linera-storage-list_root_keys)
 
 ## `linera`
 
@@ -935,6 +936,7 @@ Operation on the storage
 * `check_absence` — Check absence of a namespace in the database
 * `initialize` — Initialize a namespace in the database
 * `list_namespaces` — List the namespaces of the database
+* `list_root_keys` — List the root keys of the database
 
 
 
@@ -1010,6 +1012,18 @@ List the namespaces of the database
 
 
 
+## `linera storage list_root_keys`
+
+List the root keys of the database
+
+**Usage:** `linera storage list_root_keys --storage <STORAGE_CONFIG>`
+
+###### **Options:**
+
+* `--storage <STORAGE_CONFIG>` — Storage configuration for the blockchain history
+
+
+
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