comment address, ut fix

xuanyuanking · xuanyuanking · commit 66dc51f0bc0f · 2020-02-08T09:28:35.000+08:00
diff --git a/python/pyspark/sql/functions.py b/python/pyspark/sql/functions.py
@@ -2771,7 +2771,7 @@ def map_concat(*cols):
     +------------------------+
     |map3                    |
     +------------------------+
-    |[1 -> d, 2 -> b, 3 -> c]|
+    |[1 -> a, 2 -> b, 3 -> c]|
     +------------------------+
     """
     sc = SparkContext._active_spark_context
