chore: Minor updates on doc "bigframes/ml/base.py" (#1184)

* docs(bigquery): update minor parts in base.py

* docs(bigquery): update minor changes for bigframes/ml/base.py

---------

Co-authored-by: Shuowei Li <[email protected]>

Author: Shuowei Li

bigframes/ml/base.py

@@ -33,7 +33,7 @@
 
 class BaseEstimator(bigframes_vendored.sklearn.base.BaseEstimator, abc.ABC):
     """
-    A BigQuery DataFrames machine learning component following the SKLearn API
+    A BigQuery DataFrames machine learning component follows sklearn API
     design Ref: https://bit.ly/3NyhKjN
 
     The estimator is the fundamental abstraction for all learning components. This includes learning