[x/go.dev] revise web dev use case
[x/go.dev] revise web dev use case

Change-Id: I380f0b57faa5718cfe8d2883ab3c81438d078b67

X-GoDev-Commit: 8972749004a3fc7ffa6e5276eaf42a75e4f3b829

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website