Add lfm2_5_2_6b_decode_int8hu_block32_sym_mf64

gpu-pipelined/lfm2_5_2_6b_decode_int8hu_block32_sym_mf64/tokenizer/chat_template.jinja

@@ -121,5 +121,5 @@
     {%- endif %}
 {%- endfor -%}
 {%- if add_generation_prompt -%}
-    {{- "<|im_start|>assistant\n<think>" -}}
+    {{- "<|im_start|>assistant\n<think></think>\n" -}}
 {%- endif -%}