Update rest-api-spec (#4976)

Co-authored-by: pquentin <42327+pquentin@users.noreply.github.com>

Author: github-actions[bot]

output/schema/validation-errors.json

@@ -6,14 +6,6 @@
       ],
       "response": []
     },
-    "indices.recovery": {
-      "request": [
-        "Request: query parameter 'allow_no_indices' does not exist in the json spec",
-        "Request: query parameter 'expand_wildcards' does not exist in the json spec",
-        "Request: query parameter 'ignore_unavailable' does not exist in the json spec"
-      ],
-      "response": []
-    },
     "msearch": {
       "request": [
         "Request: query parameter 'allow_no_indices' does not exist in the json spec",

specification/_json_spec/indices.recovery.json

@@ -37,6 +37,22 @@
         "type": "boolean",
         "description": "Display only those recoveries that are currently on-going",
         "default": false
+      },
+      "ignore_unavailable": {
+        "type": "boolean",
+        "description": "Whether specified concrete indices should be ignored when unavailable (missing or closed)",
+        "default": false
+      },
+      "allow_no_indices": {
+        "type": "boolean",
+        "description": "Whether to ignore if a wildcard indices expression resolves into no concrete indices. (This includes `_all` string or when no indices have been specified)",
+        "default": true
+      },
+      "expand_wildcards": {
+        "type": "enum",
+        "options": ["open", "closed", "hidden", "none", "all"],
+        "default": "open",
+        "description": "Whether to expand wildcard expression to concrete indices that are open, closed or both."
       }
     }
   }