Typo in learning.ipynb

[IronLucario2012]

In learning.ipynb, the attribute "attr_names" of the Dataset class is incorrectly spelled as "attrnames" in several places, which, when referenced in the code cells, causes an AttributeError as shown in the callback snipped below.

AttributeError                            Traceback (most recent call last)
Input In [7], in <cell line: 2>()
      1 print("attrs:", iris.attrs)
----> 2 print("attrnames (by default same as attrs):", iris.attrnames)
      3 print("target:", iris.target)
      4 print("inputs:", iris.inputs)

AttributeError: 'DataSet' object has no attribute 'attrnames'

[Parthiv31]

May I work on this issue?