python correction

Author: shahidki31

python/pyspark/mllib/evaluation.py

@@ -324,7 +324,7 @@ class RankingMetrics(JavaModelWrapper):
     >>> metrics.precisionAt(15)
     0.17...
     >>> metrics.meanAveragePrecision
-    0.35...
+    0.14...
     >>> metrics.ndcgAt(3)
     0.33...
     >>> metrics.ndcgAt(10)