Updates the concurrency limit docs page

Author: samejr

docs/limits.mdx

@@ -13,7 +13,7 @@ import RateLimitHitUseBatchTrigger from "/snippets/rate-limit-hit-use-batchtrigg
 | Hobby        | 25 concurrent runs   |
 | Pro          | 100+ concurrent runs |
 
-Additional bundles above the Pro tier are available for $50/month per 50 concurrent runs. Contact us via [email](https://trigger.dev/contact) or [Discord](https://trigger.dev/discord) to request more.
+Extra concurrency above the Pro tier limit is available via the dashboard. Click the "Concurrency" page from the left sidebar when on the Pro plan to purchase more.
 
 ## Rate limits