* Bind to all interfaces
When running under WSL2, binding only to localhost via the 127.0.0.1 address
only lets you access the server from within WSL2 itself. It does not allow you
to access the server from Windows.
With this change, you can access the web server from the WSL ip address. You can
find your WSL ip address with
```
$ ip a | grep eth0
4: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
inet 192.168.161.12/20 brd 192.168.175.255 scope global eth0
```
* Add comment about binding to localhost
When running under WSL2, binding only to localhost via the 127.0.0.1 address
only lets you access the server from within WSL2 itself. It does not allow you
to access the server from Windows.
Add a comment explaining how to work around this, by binding to all
interfaces, instead of only to localhost.
