Adjust fix

merico/fix/command.yml

@@ -1,3 +1,4 @@
 description: Try to find out potential bugs in the selected code and try fixing these bugs automaticly.
+help: README.md
 steps:
   - run: $devchat_python $command_path/main.py

merico/fix/main.py

@@ -2,10 +2,10 @@ import os
 import re
 import sys
 
-from devchat.ide.service import IDEService
-from devchat.ide.vscode_services import selected_lines, visible_lines
 from devchat.llm import chat
 
+from lib.ide_service import IDEService
+
 
 def get_selected_code():
     """