Update examples in README to be compatible with soon-to-come ChatWidget (#23)

- Update examples in README to be compatible with soon-to-come ChatWidget (6714a7782a0f256d628dfed416acf3eccb29ea82)


Co-authored-by: Lucain Pouget <Wauplin@users.noreply.huggingface.co>

README.md

@@ -6,13 +6,18 @@ tags:
 - llama-2
 license: llama2
 widget:
-  - text: |
-      <s>Source: system
-
-       You are a helpful and honest code assistant <step> Source: user
-
-       Print a hello world in Python <step> Source: assistant
-      Destination: user
+  - example_title: Hello world (Python)
+    messages:
+    - role: system
+      content: You are a helpful and honest code assistant
+    - role: user
+      content: Print a hello world in Python
+  - example_title: Sum of sublists (Python)
+    messages:
+    - role: system
+      content: You are a helpful and honest code assistant expert in JavaScript. Please, provide all answers to programming questions in JavaScript
+    - role: user
+      content: Write a function that computes the set of sums of all contiguous sublists of a given list.
 inference:
   parameters:
     max_new_tokens: 200