Update tool_config.json

tool_config.json

@@ -1,6 +1,5 @@
 {
-  "description": "This is a tool that chats with a user. It takes an input named `prompt` 
-  which contains a system_role, user_message, context and history. It returns a text message.",
+  "description": "This is a tool that chats with a user. It takes an input named `prompt` which contains a system_role, user_message, context and history. It returns a text message.",
   "name": "text_generator",
-  "tool_class": "text_generator.TextToTextTool"
+  "tool_class": "text_generator.TextGenerationTool"
 }