fix the wrong content

[sunny0826]

Description of your changes

Fixes #1229

I have:

• [x] Read and followed KubeVela's contribution process.
• [x] Update sidebar.js if adding a new page.
• [x] Run yarn start to ensure the changes has taken effect.

Special notes for your reviewer

The -c flag is the -component shorthand, not the -container.

vela logs -h
Tail logs for vela application.

Usage:
  vela logs APP_NAME [flags]

Flags:
      --cluster string     filter the pod by the cluster name
  -c, --component string   filter the pod by the component name
      --container string   specify the container name
  -e, --env string         specify environment name for application
  -h, --help               help for logs
  -n, --namespace string   specify the Kubernetes namespace to use
  -o, --output string      output format for logs, support: [default, raw, json] (default "default")
  -p, --pod string         specify the pod name

Global Flags:
  -y, --yes   Assume yes for all user prompts