Fix typo in chat template example (#35250)

Fix template example typo

docs/source/en/chat_templating.md

@@ -683,7 +683,7 @@ one is a little simplified from the actual one!
 
 ```
 {%- for message in messages %}
-    {{- '<|' + message['role'] + |>\n' }}
+    {{- '<|' + message['role'] + '|>\n' }}
     {{- message['content'] + eos_token }}
 {%- endfor %}
 {%- if add_generation_prompt %}
@@ -1116,4 +1116,4 @@ name to be included in the tool response, then rendering it can be as simple as:
 ```
 
 Again, remember that the actual formatting and special tokens are model-specific - you should take a lot of care
-to ensure that tokens, whitespace and everything else exactly match the format your model was trained with!
+to ensure that tokens, whitespace and everything else exactly match the format your model was trained with!