doc/troubleshooting: update hubble commands example output
doc/troubleshooting: update hubble commands example output

The format of the `hubble status` and `hubble observe` subcommands vary
slightly with the new Hubble CLI. Make sure the examples are consistent
with the new version.

While there, the new CLI also defaults to `localhost:4245` as the server
address. Hence, remove notes that hinted to use `--server
localhost:4245` when running Hubble CLI commands.

Signed-off-by: Robin Hahling <042b6757f29293f4affc22596084b908e3917891@gw-computing.net>

michi-covalent/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium