Fixed search_pipeline.get spec (#255)

Signed-off-by: saimedhi <saimedhi@amazon.com>

spec/namespaces/search_pipeline.yaml

@@ -4,12 +4,23 @@ info:
   description: OpenSearch Search_pipeline API
   version: 1.0.0
 paths:
-  /_search/pipeline/{id}:
+  /_search/pipeline:
     get:
       operationId: search_pipeline.get.0
       x-operation-group: search_pipeline.get
       x-version-added: '2.9'
       description: Retrieves information about a specified search pipeline.
+      parameters:
+        - $ref: '#/components/parameters/search_pipeline.get::query.cluster_manager_timeout'
+      responses:
+        '200':
+          $ref: '#/components/responses/search_pipeline.get@200'
+  /_search/pipeline/{id}:
+    get:
+      operationId: search_pipeline.get.1
+      x-operation-group: search_pipeline.get
+      x-version-added: '2.9'
+      description: Retrieves information about a specified search pipeline.
       parameters:
         - $ref: '#/components/parameters/search_pipeline.get::query.cluster_manager_timeout'
         - $ref: '#/components/parameters/search_pipeline.get::path.id'
@@ -81,12 +92,14 @@ components:
     search_pipeline.put::path.id:
       name: id
       in: path
+      description: Pipeline ID.
       schema:
         type: string
       required: true
     search_pipeline.delete::path.id:
       name: id
       in: path
+      description: Pipeline ID.
       schema:
         type: string
       required: true

spec/opensearch-openapi.yaml

@@ -468,6 +468,8 @@ paths:
     $ref: 'namespaces/security.yaml#/paths/~1_plugins~1_security~1health'
   /_remotestore/_restore:
     $ref: 'namespaces/remote_store.yaml#/paths/~1_remotestore~1_restore'
+  /_search/pipeline:
+    $ref: 'namespaces/search_pipeline.yaml#/paths/~1_search~1pipeline'
   /_search/pipeline/{id}:
     $ref: 'namespaces/search_pipeline.yaml#/paths/~1_search~1pipeline~1{id}'
   /_snapshot: