Merge pull request #117 from PaddlePaddle/jinghu23-patch-1

Update README.md

Author: jinghu23

apps/drug_drug_synergy/RGCN/README.md

@@ -21,7 +21,7 @@ Drug-drug synergy information and drug physi-chemical features can be put under
 ### ddi
 
 ```sh
-cd data && mkdir DDI && wget "http://www.bioinf.jku.at/software/DeepSynergy/labels.csv"
+mkdir data && cd data && mkdir DDI && wget "http://www.bioinf.jku.at/software/DeepSynergy/labels.csv"
 ```
 
 ### dti
@@ -65,4 +65,4 @@ Notice that if you only have CPU machine, just remove `--cuda`.
   pages={427--438},
   year={2020},
   publisher={Elsevier}
-}
+}