Update prompt template in examples

README.md

@@ -7,29 +7,29 @@ tags:
 pipeline_tag: text-generation
 widget:
 - example_title: Easy
-  text: '<|user|>
+  text: '<|im_start|>user
 
-    How do call options benefit the buyer?
+    How do call options benefit the buyer?<|im_end|>
 
-    <|assistant|>
+    <|im_start|>assistant
 
     '
 - example_title: Medium
-  text: '<|user|>
+  text: '<|im_start|>user
 
     Why might a trader choose to quickly exit a losing position, even if they still
-    believe in the original trade idea?
+    believe in the original trade idea?<|im_end|>
 
-    <|assistant|>
+    <|im_start|>assistant
 
     '
 - example_title: Hard
-  text: '<|user|>
+  text: '<|im_start|>user
 
     In the context of Harry Markowitz''s Portfolio Selection theory, what does an
-    ''efficient'' portfolio refer to?
+    ''efficient'' portfolio refer to?<|im_end|>
 
-    <|assistant|>
+    <|im_start|>assistant
 
     '
 inference: