Update docs/roo-code-cloud/cloud-agents.mdx

Co-authored-by: roomote[bot] <219738659+roomote[bot]@users.noreply.github.com>

Author: brunobergher

docs/roo-code-cloud/cloud-agents.mdx

@@ -48,7 +48,7 @@ We have more agents in the works, such as:
 
 ## Getting started
 
-1. [Sign up](http://app.roocode.com/sign-up) for a Roo Code Cloud account
+1. [Sign up](https://app.roocode.com/sign-up) for a Roo Code Cloud account
 2. Upgrade to a paid plan.
 3. You'll get free credits to get started
 4. [Create your first agent](https://app.roocode.com/cloud-agents/create).