Add newline after chat example in llama-server

[StrangeBytesDev]

Currently llama-server doesn't add a newline after the chat example in the log. Here's an example log output from B3812:

I main: model loaded
I main: chat template, built_in: 1, chat_example: '<|system|>
You are a helpful assistant<|end|>
<|user|>
Hello<|end|>
<|assistant|>
Hi there<|end|>
<|user|>
How are you?<|end|>
<|assistant|>

'I main: server is listening on 127.0.0.1:8080 - starting the main loop

This change simple puts a newline after the chat example.

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