Update rest-api-spec

Author: github-actions[bot]

output/schema/schema.json

@@ -0,0 +1,37 @@
+{
+  "semantic_search": {
+    "documentation": {
+      "url": "https://www.elastic.co/guide/en/elasticsearch/reference/current/semantic-search.html",
+      "description": "Semantic search API using dense vector similarity"
+    },
+    "stability": "experimental",
+    "visibility": "public",
+    "headers": {
+      "accept": ["application/json"],
+      "content_type": ["application/json"]
+    },
+    "url": {
+      "paths": [
+        {
+          "path": "/{index}/_semantic_search",
+          "methods": ["GET", "POST"],
+          "parts": {
+            "index": {
+              "type": "list",
+              "description": "A comma-separated list of index names to search; use `_all` to perform the operation on all indices"
+            }
+          }
+        }
+      ]
+    },
+    "params": {
+      "routing": {
+        "type": "list",
+        "description": "A comma-separated list of specific routing values"
+      }
+    },
+    "body": {
+      "description": "The search definition"
+    }
+  }
+}