Lint and doc fix

Author: TomAugspurger

doc/source/whatsnew/v0.21.0.txt

@@ -25,7 +25,7 @@ New features
 - Added `__fspath__` method to :class`:pandas.HDFStore`, :class:`pandas.ExcelFile`,
   and :class:`pandas.ExcelWriter` to work properly with the file system path protocol (:issue:`13823`)
 - Added `limit_area` parameter to `DataFrame.interpolate()` method allowing further control of which NaNs are replaced.
-  Use `limit-area='inside'` to fill only NaNs surrounded by valid values or use `limit-area='outside'` to fill only NaNs outside the existing valid values while preserving those inside.  (:issue:`16284`)
+  Use `limit_area='inside'` to fill only NaNs surrounded by valid values or use `limit_area='outside'` to fill only NaNs outside the existing valid values while preserving those inside.  (:issue:`16284`)
   Full documentation and examples are :ref:`here <missing_data.interp_limits>`.
 
 .. _whatsnew_0210.enhancements.other:

pandas/core/generic.py

@@ -3884,7 +3884,7 @@ def replace(self, to_replace=None, value=None, inplace=False, limit=None,
             Maximum number of consecutive NaNs to fill. Must be greater than 0.
         limit_direction : {'forward', 'backward', 'both'}, default 'forward'
             Consecutive NaNs will be filled in this direction.
-            
+
             .. versionadded:: 0.17.0
 
         limit_area : {'inside', 'outside'}, default None