Fix Neural search pipeline example (#2177)

* Fix Neural search pipeline example

Signed-off-by: Naarcha-AWS <naarcha@amazon.com>

* Fix cluster settings

Signed-off-by: Naarcha-AWS <naarcha@amazon.com>

Signed-off-by: Naarcha-AWS <naarcha@amazon.com>

_ml-commons-plugin/cluster-settings.md

@@ -27,7 +27,7 @@ If `true`, ML Commons tasks and models run machine learning (ML) tasks on ML nod
 - Default value: `false`
 - Value range: `true` or `false`
 
-## Dispatch tasks to ML node with least load
+## Dispatch tasks to ML node 
 
 ### Setting
 
@@ -42,7 +42,7 @@ plugins.ml_commons.task_dispatch_policy: round_robin
 ### Values
 
 - Dafault value: `round_robin`
-- Value range: `round_robin or least_load`
+- Value range: `round_robin` or `least_load`
 
 
 ## Set sync up job intervals 

_neural-search-plugin/index.md

@@ -42,7 +42,7 @@ output_field_name  | string | The name of the field in which output text is stor
 
 Use the following example request to create a pipeline:
 
-```json
+```
 PUT _ingest/pipeline/nlp-pipeline
 {
   "description": "An example neural search pipeline",
@@ -51,7 +51,7 @@ PUT _ingest/pipeline/nlp-pipeline
       "text_embedding": {
         "model_id": "bxoDJ7IHGM14UqatWc_2j",
         "field_map": {
-           "text": "text_knn"
+           "passage_text": "passage_embedding"
         }
       }
     }