Add versionadded tag to error argument

Author: roberthdevries

pandas/core/generic.py

@@ -2426,6 +2426,9 @@ def to_hdf(
             Specifies how encoding and decoding errors are to be handled.
             See the errors argument for :func:`open` for a full list
             of options.
+
+        .. versionadded:: 1.1.0
+
         min_itemsize : dict or int, optional
             Map column names to minimum string sizes for columns.
         nan_rep : Any, optional

pandas/io/common.py

@@ -369,6 +369,9 @@ def get_handle(
         Specifies how encoding and decoding errors are to be handled.
         See the errors argument for :func:`open` for a full list
         of options.
+
+        .. versionadded:: 1.1.0
+
     compression : str or dict, default None
         If string, specifies compression mode. If dict, value at key 'method'
         specifies compression mode. Compression mode must be one of {'infer',