address comments

Author: Davies Liu

core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala

@@ -760,8 +760,6 @@ private[spark] object PythonRDD extends Logging {
 
   /**
    * A helper to convert java.util.List[Double] into Array[Double]
-   * @param list
-   * @return
    */
   def listToArrayDouble(list: JList[Double]): Array[Double] = {
     val r = new Array[Double](list.size)

python/pyspark/rdd.py

@@ -322,7 +322,7 @@ def randomSplit(self, weights, seed=None):
 
         :param weights: weights for splits, will be normalized if they don't sum to 1
         :param seed: random seed
-        :return: split RDDs in an list
+        :return: split RDDs in a list
 
         >>> rdd = sc.parallelize(range(10), 1)
         >>> rdd1, rdd2, rdd3 = rdd.randomSplit([0.4, 0.6, 1.0], 11)