[API] Updates

Adds wait_for_index parameter to fleet.global_checkpoints
Minor update on searchable_snapshots.stats source code documentation

Author: picandocodigo

elasticsearch-xpack/lib/elasticsearch/xpack/api/actions/fleet/global_checkpoints.rb

@@ -28,6 +28,7 @@ module Actions
           #
           # @option arguments [String] :index The name of the index.
           # @option arguments [Boolean] :wait_for_advance Whether to wait for the global checkpoint to advance past the specified current checkpoints
+          # @option arguments [Boolean] :wait_for_index Whether to wait for the target index to exist and all primary shards be active
           # @option arguments [List] :checkpoints Comma separated list of checkpoints
           # @option arguments [Time] :timeout Timeout to wait for global checkpoint to advance
           # @option arguments [Hash] :headers Custom HTTP headers
@@ -56,6 +57,7 @@ def global_checkpoints(arguments = {})
           # @since 6.2.0
           ParamsRegistry.register(:global_checkpoints, [
             :wait_for_advance,
+            :wait_for_index,
             :checkpoints,
             :timeout
           ].freeze)

elasticsearch-xpack/lib/elasticsearch/xpack/api/actions/searchable_snapshots/stats.rb

@@ -20,7 +20,7 @@ module XPack
     module API
       module SearchableSnapshots
         module Actions
-          # Retrieve various statistics about searchable snapshots.
+          # Retrieve shard-level statistics about searchable snapshots.
           # This functionality is Experimental and may be changed or removed
           # completely in a future release. Elastic will take a best effort approach
           # to fix any issues, but experimental features are not subject to the