Update README.md to Resolve Errors

Adding an additional scheduler option as the previous example was failing to build the backend.  
Also, the spec was missing in the groupTransformer which caused all insertions of new groups to fail with an error such that:
```
Thanks, this helped.  
Next error now is:
[1] 2024-03-21T21:53:32.085Z catalog warn Policy check failed for group:default/xxxxxxxx; caused by Error: Malformed envelope, <root> must NOT have additional properties type=plugin entity=group:default/xxxxx
```

plugins/catalog-backend-module-okta/README.md

@@ -40,6 +40,7 @@ export default async function createPlugin(
       logger: env.logger,
       schedule: env.scheduler.createScheduledTaskRunner({
         frequency: { days: 1 },
+        timeout: { minutes: 30 },
       }),
       // query params passed to the okta api groups request
       listGroupsRequest: {
@@ -67,10 +68,12 @@ export default async function createPlugin(
           name: oktaGroup.profile!.name!.toLowerCase(),
           description: oktaGroup.profile?.description || '',
         },
-        type: 'team',
-        children: [],
-        profile: {
-          displayName: oktaGroup.profile!.name!,
+        spec: {
+          type: 'team',
+          children: [],
+          profile: {
+            displayName: oktaGroup.profile!.name!,
+          },
         },
       }),
     }),