[bug] ordinal encoder example code incorrect?

### Enter the chapter number

2

### Enter the page number

encoding example within sklearn section

### What is the cell's number in the notebook

na

### Enter the environment you are using to run the notebook

Jupyter on Windows

### Describe your issue

the following code:
from sklearn.preprocessing import OrdinalEncoder

ordinal_encoder = OrdinalEncoder()
housing_cat_encoded = ordinal_encoder.fit_transform(housing_cat)

seems like, instead of using housing_cat, the var used should be housing_full[["ocean_proximity"]]

### Enter what you expected to happen

_No response_

### If you found a workaround, describe it here

_No response_