Use sentence casing for headings.

```suggestion
#### Header read timeout
```

Use present tense ("waits" instead of "will wait") and active voice. Use lowercase "router" to refer to the instance.

```suggestion
The header read timeout is the duration the router waits to receive complete request headers from a client. This applies when the connection is idle and when a request starts but the client hasn't finished sending headers.
```

Use active voice ("Configure..." instead of "can be configured"). Use words for numbers zero through ten ("ten seconds").

```suggestion
The default header read timeout is ten seconds. Configure the timeout with the `server.http.header_read_timeout` option.
```