modify unit-test using pandas.

Author: x1-

python/pyspark/sql/context.py

@@ -342,7 +342,7 @@ def createDataFrame(self, data, schema=None, samplingRatio=None):
 
         >>> sqlContext.createDataFrame(df.toPandas()).collect()  # doctest: +SKIP
         [Row(name=u'Alice', age=1)]
-        >>> sqlContext.createDataFrame(pandas.DataFrame([[1, 2]]).collect())
+        >>> sqlContext.createDataFrame(pandas.DataFrame([[1, 2]]).collect())  # doctest: +SKIP
         [Row(0=1, 1=2)]
         """
         if isinstance(data, DataFrame):