Update step numbering in Roomote Control documentation

Author: hannesrudolph

docs/roo-code-cloud/roomote-control.mdx

@@ -61,7 +61,7 @@ You should have them on by default, but if not:
 - In the IDE: Click the cloud icon <Codicon name="cloud" /> and toggle Task Sync first, then Roomote Control in the Cloud panel.
 - In the web app: Go to Settings › User and toggle Task Sync and Roomote Control. You may also see inline “Enable …” banners on Home/Task pages.
 
-#### Step 3: Start a Remote Task
+#### Step 4: Start a Remote Task
 
 When connected and enabled:
 1. Your VS Code workspace(s) appear in the web app.