Modin docs reference added

Modin docs reference added

Author: C-K-Loan

docs/en/predict_api.md

@@ -270,10 +270,9 @@ One column must be named text and of string type or the first column will be use
 
 ```python
 import nlu
-import modin.pandas as mpd
+import modin.pandas as pd
 data = {"text": ['This day sucks', 'I love this day', 'I don't like Sami']}
 text_pdf = pd.DataFrame(data)
-text_sdf = nlu.spark.createDataFrame(text_pdf)
-nlu.load('sentiment').predict(text_sdf)
+nlu.load('sentiment').predict(text_pdf)
 ```