docs: argocd confusion, its not a non-Kubernetes option

### Current State

in the Summary section of https://apisix.apache.org/blog/2023/10/07/apisix-gitops-adc/
the text reads:

```In non-Kubernetes environments, users can seamlessly integrate tools like Jenkins and ArgoCD.```

ArgoCD is kubernetes first software and afaik cannot work without it, so this sentence reads weird.

### Desired State

"In non-Kubernetes environments, users can seamlessly integrate tools like Jenkins"...

Open the APISIX GitOps ADC blog post linked in the issue and inspect its Summary section. Update the sentence so the non-Kubernetes integration example mentions Jenkins without ArgoCD, then verify the published text matches the desired wording.

Written by the indexing model from the issue text.