fix: no backslashes in f-string expression part

Author: xulbux

src/xulbux/env_path.py

@@ -108,7 +108,7 @@ def __persistent(path: str, remove: bool = False) -> None:
                 _winreg.SetValueEx(key, "PATH", 0, _winreg.REG_EXPAND_SZ, new_path)
                 _winreg.CloseKey(key)
             except Exception as e:
-                raise RuntimeError(f"Failed to update PATH in registry:\n  {str(e).replace('\n', '  \n')}")
+                raise RuntimeError(f"Failed to update PATH in registry:\n  " + str(e).replace("\n", "  \n"))
 
         else:  # UNIX-LIKE (LINUX/macOS)
             shell_rc_file = _os.path.expanduser(