Update table.csv

fixing missing value.

Author: georgewallace

specification/_doc_ids/table.csv

@@ -283,6 +283,7 @@ index-modules,https://www.elastic.co/docs/reference/elasticsearch/index-settings
 index,https://www.elastic.co/docs/get-started,"Get started",
 indexing-buffer,https://www.elastic.co/docs/reference/elasticsearch/configuration-reference/indexing-buffer-settings,"Indexing buffer settings",
 index-modules-merge,https://www.elastic.co/docs/reference/elasticsearch/index-settings/merge,"Merge settings",
+index-settings,https://www.elastic.co/docs/reference/elasticsearch/index-settings,"Index Settings",
 index-templates,https://www.elastic.co/docs/manage-data/data-store/templates,"Templates",
 index-templates-exist,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-exists-index-template,"Check index templates",https://www.elastic.co/guide/en/elasticsearch/reference/8.18/indices-put-template.html
 index-templates-put,https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-put-index-template,"Create or update an index template",https://www.elastic.co/guide/en/elasticsearch/reference/8.18/indices-put-template.html