Outdated ruleset expression

### Existing documentation URL(s)

- https://developers.cloudflare.com/ruleset-engine/rules-language/expressions/#compound-expressions

### What changes are you suggesting?

Update rule from

```
host eq www.example.com and not cf.edge.server_port in {80 443}
```

to

```
http.host eq "www.example.com" and not cf.edge.server_port in {80 443}
```

### Additional information

Thanks!