Fix grammar & typos: tidy blank line in Claude Code cloud agents page (#292)

## Summary
Removed a stray double blank line in
`docs/runtimes/claude-code-cloud-agents.mdx` between the "list the
uploaded session objects" prose and the following `gcloud storage ls`
code block.

## Changes
- `docs/runtimes/claude-code-cloud-agents.mdx` — collapsed two
consecutive blank lines to one before the GCS list command.

## Context
Scanned the docs pages touched by the S3 forwarding change (commit
`bf6588b`): `docs/cli/cloud-s3-setup.mdx`,
`docs/runtimes/claude-code-cloud-agents.mdx`, and
`docs/guides/claude-s3-system.mdx`. No spelling errors, duplicate words,
broken markdown, or frontmatter issues were found — only the one
formatting nit above.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Whitespace-only change in documentation with no runtime, security, or
behavioral impact.
> 
> **Overview**
> **Documentation formatting only** in
`docs/runtimes/claude-code-cloud-agents.mdx` under **5. Verify Upload**.
> 
> Removes one redundant blank line between the GCS “list the uploaded
session objects” sentence and the `gcloud storage ls` code block so
spacing matches the S3 section below it.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
b8f4f1e. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Co-authored-by: mintlify[bot] <109931778+mintlify[bot]@users.noreply.github.com>

Author: mintlify[bot]

docs/runtimes/claude-code-cloud-agents.mdx

@@ -282,7 +282,6 @@ Read the README, run pwd && ls, create a tiny temporary markdown note under /tmp
 
 For GCS, list the uploaded session objects:
 
-
 ```bash
 gcloud storage ls --recursive "gs://${BEACON_TEST_BUCKET}/${BEACON_CLOUD_GCS_PREFIX}/"
 ```