Source Netsuite: fix public documentation (airbytehq#17037)

Author: bazarnov

docs/integrations/sources/netsuite.md

@@ -108,7 +108,7 @@ The NetSuite source connector supports the following [sync modes](https://docs.a
 
 ## Performance considerations
 
-The connector is restricted by normal Okta [requests limitation](https://developer.okta.com/docs/reference/rate-limits/).
+The connector is restricted by Netsuite [Concurrency Limit per Integration](https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/bridgehead_156224824287.html).
 
 ## Changelog