DOC-13306: Add documentation for indexer level scan timeout (#3863)

* Update Index REST API partial
* Update Index REST API page
* Update overall REST API intro page
* Remove Modify Index Batch Size Page
* Update nav

Author: simon-dew

modules/ROOT/nav.adoc

@@ -487,7 +487,7 @@ include::cli:partial$cbcli/nav.adoc[]
      *** xref:rest-api:get-settings-indexes.adoc[Retrieve GSI Settings]
      *** xref:rest-api:post-settings-indexes.adoc[Set GSI Settings]
      *** xref:index-rest-stats:index.adoc[Index Statistics API]
-     *** xref:rest-api:rest-modify-index-batch-size.adoc[Modify Index Batch Size]
+     *** xref:index-rest-settings:index.adoc[Index Settings API]
 
     ** xref:rest-api:backup-rest-api.adoc[Backup Service API]
      *** xref:rest-api:backup-create-and-edit-plans.adoc[Create and Edit Plans]

modules/rest-api/pages/rest-index-service.adoc

@@ -1,14 +1,17 @@
 = Index Service API
-:description: The Index service REST API provides configuration options for the Index service.
+:description: The Index Service REST APIs provide configuration options for the Index Service.
 :page-topic-type: reference
+:page-toclevels: 2
 :page-aliases: rest-api:get-status-indexes.adoc,rest-api:get-statement-indexes.adoc
 
 [abstract]
 {description}
 
 == APIs in this Section
 
-The REST API allows Index-Service indexes to be created and managed.
-For a list of the methods and URIs covered in these pages, see the table below.
+For a list of the methods and URIs covered in these pages, see the tables below.
+
+By default, the Index REST APIs below listen on port `9102`, or `19102` for secure access.
+Note that the GSI Settings API listens on port `8091`, or `18091` for secure access.
 
 include::partial$rest-index-service-table.adoc[]

modules/rest-api/pages/rest-intro.adoc

@@ -128,7 +128,7 @@ include::partial$rest-query-service-table.adoc[]
 == Index Service API
 
 The _Index Service_ REST API provides configuration options for the Index Service.
-The API is listed below.
+The APIs are listed below.
 
 include::partial$rest-index-service-table.adoc[]
 

modules/rest-api/pages/rest-modify-index-batch-size.adoc

@@ -1,3 +1,5 @@
+=== GSI Settings
+
 [cols="2,7,6"]
 |===
 | HTTP Method | URI | Documented at
@@ -10,6 +12,14 @@
 | `/settings/indexes`
 | xref:rest-api:post-settings-indexes.adoc[Set GSI Settings]
 
+|===
+
+=== Index Statistics
+
+[cols="2,7,6"]
+|===
+| HTTP Method | URI | Documented at
+
 | `GET`
 | `/api/v1/stats`
 | xref:index-rest-stats:index.adoc#get_node_stats[Get Node Statistics]
@@ -23,3 +33,19 @@
 | xref:index-rest-stats:index.adoc#get_index_stats[Get Index Statistics]
 
 |===
+
+=== Index Settings
+
+[cols="2,7,6"]
+|===
+| HTTP Method | URI | Documented at
+
+| `GET`
+| `/settings`
+| xref:index-rest-settings:index.adoc#get_settings[Retrieve Index Settings]
+
+| `POST`
+| `/settings`
+| xref:index-rest-settings:index.adoc#post_settings[Update Index Settings]
+
+|===