Fix the xml schema of the vhost.conf
Fix the xml schema of the vhost.conf

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

teohhanhui/api-platform,api-platform/api-platform,teohhanhui/api-platform,api-platform/api-platform,teohhanhui/api-platform,api-platform/api-platform,teohhanhui/api-platform,api-platform/api-platform