Update README.md

dssm/README.md

@@ -10,7 +10,7 @@ DSSM \[[1](#References\] is a classic semantic model proposed by the Institute o
 
 
 ## Model Architecture
-In the original paper\[[1](#References\] the DSSM model uses the implicit semantic relation between the user search query and the document as metric. The model structure is as follows
+In the original paper \[[1](#References)]\[[1](#References\] the DSSM model uses the implicit semantic relation between the user search query and the document as metric. The model structure is as follows
 
 <p align="center">
 <img src="./images/dssm.png"/><br/><br/>