Add missing index parameter to _cat/recovery (#3811)

Author: l-trotta

output/openapi/elasticsearch-openapi.json

@@ -118,7 +118,6 @@
     },
     "cat.recovery": {
       "request": [
-        "Request: missing json spec query parameter 'index'",
         "request definition cat.recovery:Request / body - A request with inherited properties must have a PropertyBody"
       ],
       "response": []

output/schema/schema.json

@@ -68,6 +68,10 @@ export interface Request extends CatRequestBase {
      * @server_default false
      */
     detailed?: boolean
+    /**
+     * Comma-separated list or wildcard expression of index names to limit the returned information
+     */
+    index?: Indices
     /**
      * List of columns to appear in the response. Supports simple wildcards.
      */