Update chat_template.jinja

chat_template.jinja

@@ -49,7 +49,7 @@
 {%- set hist_msgs = messages[:ns.last_non_tool_call_assistant_msg+1] -%}
 {%- set suffix_msgs = messages[ns.last_non_tool_call_assistant_msg+1:] -%}
 
-{%- if tools -%}{%- set tools_json = tools | tojson -%}{%- set tools_json =tools_json.replace(", ", ",") -%}
+{%- if tools -%}{%- set tools_json = tools | tojson -%}{%- set tools_json = tools_json.replace(", ", ",") -%}{%- set tools_json = tools_json.replace(": ", ":") -%}
   <|im_system|>tool_declare<|im_middle|>{{ tools_json }}<|im_end|>
 {%- endif -%}