Update main.py

main.py

@@ -67,8 +67,8 @@ Page instfiles
 
 Section "Install"
     SetOutPath "$INSTDIR"
-    File "{bat_path.replace('\\', '\\\\')}"  # Escape backslashes for NSIS
-    File "{icon_path.replace('\\', '\\\\')}"  # Escape backslashes for NSIS
+    File "{bat_path.replace(os.sep, '\\\\')}"  # Use double backslashes for NSIS
+    File "{icon_path.replace(os.sep, '\\\\')}"  # Use double backslashes for NSIS
 SectionEnd
 """