Update README.md

README.md

@@ -22,8 +22,9 @@ widget:
 
 # # Our experiment 
 
-  - The category mapping
-  category_mapping = {
+  - The category mapping:
+
+     category_mapping = {
   
       'Politics':1,
       'Finance':2,
@@ -32,8 +33,8 @@ widget:
       'Culture':5,
       'Tech':6,
       'Religion':7
-  }
-  
+     }
+    
   - Training parameters
 
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