Update docs/roo-code-cloud/billing-subscriptions.mdx

Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>

Author: brunobergher

docs/roo-code-cloud/billing-subscriptions.mdx

@@ -44,7 +44,7 @@ You can find details for them [in the pricing page](https://roocode.com/pricing)
 - [Cloud Agents](/roo-code-cloud/cloud-agents) are only available in paid plans.
 - Cloud Agents run in Roo Code Cloud and consume credits proportional to their run time.
 - Model inference uses your own provider keys (no model markups!).
-- To top up credits, go to [Billing](https:/app.roocode.com/billing) and add them
+- To top up credits, go to [Billing](https://app.roocode.com/billing) and add them
 - Track usage and costs alongsite other stats in [Analytics](/roo-code-cloud/analytics).
 
 ## Payment & Security