fix: escape modify_open_api_schema option since it can be a 3/tuple

Author: zachdaniel

lib/ash_json_api/router.ex

@@ -22,6 +22,13 @@ defmodule AshJsonApi.Router do
   ```
   """
   defmacro __using__(opts) do
+    opts =
+      if Keyword.keyword?(opts) && opts[:modify_open_api_schema] do
+        Keyword.update!(opts, :modify_open_api_schema, &Macro.escape/1)
+      else
+        opts
+      end
+
     quote bind_quoted: [opts: Spark.Dsl.Extension.expand_alias_no_require(opts, __CALLER__)] do
       require Ash.Domain.Info
       use Plug.Router