Also fix python docstring for :func:to_dict

pandas/core/frame.py

@@ -1820,7 +1820,7 @@ def to_dict(self, orient: str = "dict", into=dict):
 
  Parameters
  ----------
- orient : str {'dict', 'list', 'series', 'split', 'records', 'index'}
+ orient : str {'dict', 'list', 'series', 'split', 'tight', 'records', 'index'}
  Determines the type of the values of the dictionary.
 
  - 'dict' (default) : dict like {column -> {index -> value}}