[SPARKNLP-1177] Solving typo in Python wrapper for RoBertaForMultipleChoice (#14567)

Author: danilojsl

python/sparknlp/annotator/classifier_dl/roberta_for_multiple_choice.py

@@ -104,7 +104,7 @@ def setChoicesDelimiter(self, value):
         return self._set(caseSensitive=value)
 
     @keyword_only
-    def __init__(self, classname="com.johnsnowlabs.nlp.annotators.classifier.dl.RobertaForMultipleChoice",
+    def __init__(self, classname="com.johnsnowlabs.nlp.annotators.classifier.dl.RoBertaForMultipleChoice",
                  java_model=None):
         super(RoBertaForMultipleChoice, self).__init__(
             classname=classname,