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README.md

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 * **Angel**
 	* [Logistic Regression](./docs/algo/lr_on_angel.md) ([ADMM](./docs/algo/admm_lr_on_angel.md))
-	* [Large Scale Piece-wise Linear Model/Mix Logistic Regression](./docs/algo/mlr_on_angel.md) | 
+	* [Large Scale Piece-wise Linear Model/Mix Logistic Regression](./docs/algo/mlr_on_angel.md)
 	* [Matrix Factorization](./docs/algo/mf_on_angel.md)
 	* [SVM](./docs/algo/svm_on_angel.md)
 	* [KMeans](./docs/algo/kmeans_on_angel.md)