minor #692 Update cerebras chat example (OskarStark)

This PR was merged into the main branch.

Discussion
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 Update cerebras chat example

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Docs?         | no
| Issues        | --
| License       | MIT

To not receive:
> I'm not currently able to access real-time information. However, I can suggest some possible ways...

Commits
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1d18c5a Update cerebras chat example

Author: OskarStark

examples/cerebras/chat.php

@@ -20,7 +20,7 @@
 
 $messages = new MessageBag(
     Message::forSystem('You are a helpful assistant.'),
-    Message::ofUser('How is the weather in Tokyo today?'),
+    Message::ofUser('What is the capital of Japan?'),
 );
 $result = $platform->invoke(new Model(Model::LLAMA3_1_8B), $messages);