fix broken links

Author: Cheggin

docs/cloud/api-reference.mdx

@@ -13,7 +13,7 @@ Get your key at [cloud.browser-use.com/settings](https://cloud.browser-use.com/s
 ## API Versions
 
 <CardGroup cols={2}>
-  <Card title="BU Agent API (v3)" icon="bolt" href="/cloud/api-v3/create-session">
+  <Card title="BU Agent API (v3)" icon="bolt" href="/cloud/api-v3/sessions/create-session">
     **Recommended for new projects.** Session-based agent API with simplified resource model.
 
     Base URL: `https://api.browser-use.com/api/v3`
@@ -26,7 +26,7 @@ Get your key at [cloud.browser-use.com/settings](https://cloud.browser-use.com/s
     - Persistent workspaces across sessions
     - Models: `bu-mini` (default) and `bu-max`
   </Card>
-  <Card title="Cloud API v2 (Stable)" icon="shield-check" href="/cloud/api-v2/get-account-billing">
+  <Card title="Cloud API v2 (Stable)" icon="shield-check" href="/cloud/api-v2/tasks/create-task">
     **Full-featured stable API.** Task-based with extended resources.
 
     Base URL: `https://api.browser-use.com/api/v2`