更新 15章 mr版本链接

Author: jiangzhonglian

docs/15.大数据与MapReduce.md

@@ -183,7 +183,7 @@ def batchPegasos(dataSet, labels, lam, T, k):
 
 [完整代码地址](https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/pegasos.py): <https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/pegasos.py>
 
-Node: [MR版本的代码位置](https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/mrSVM.py): <https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/mrSVM.py>
+[MR版本的代码位置](https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/mrSVM.py): <https://github.com/apachecn/MachineLearning/blob/master/src/python/15.BigData_MapReduce/mrSVM.py>
 
 
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