fix the type for $recursiveAnchor

Author: karenetheridge

schema.json

@@ -46,7 +46,7 @@
         },
         "$recursiveAnchor": {
             "$comment": "\"$recursiveAnchor\" has been replaced by \"$dynamicAnchor\".",
-            "$ref": "meta/core#/$defs/anchorString",
+            "type": "boolean",
             "deprecated": true
         },
         "$recursiveRef": {